2685196980 has 120 divisors (see below), whose sum is σ = 8447198760. Its totient is φ = 714044160.

The previous prime is 2685196973. The next prime is 2685196991. The reversal of 2685196980 is 896915862.

It is a happy number.

2685196980 is a `hidden beast` number, since 2 + 68 + 519 + 69 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 580039056 + 2105157924 = 24084^2 + 45882^2 .

It is a super-2 number, since 2×2685196980² = 14420565642802240800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 628050 + ... + 632310.

It is an arithmetic number, because the mean of its divisors is an integer number (70393323).

Almost surely, 2^2685196980 is an apocalyptic number.

2685196980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2685196980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4223599380).

2685196980 is an abundant number, since it is smaller than the sum of its proper divisors (5762001780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2685196980 is a wasteful number, since it uses less digits than its factorization.

2685196980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671 (or 4660 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 2685196980 is about 51818.8863253544. The cubic root of 2685196980 is about 1389.9271876702.

The spelling of 2685196980 in words is "two billion, six hundred eighty-five million, one hundred ninety-six thousand, nine hundred eighty".