2690917680 has 160 divisors (see below), whose sum is σ = 9166913280. Its totient is φ = 647562240.

The previous prime is 2690917673. The next prime is 2690917787. The reversal of 2690917680 is 867190962.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363294 + ... + 370626.

It is an arithmetic number, because the mean of its divisors is an integer number (57293208).

Almost surely, 2^2690917680 is an apocalyptic number.

2690917680 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 2690917680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4583456640).

2690917680 is an abundant number, since it is smaller than the sum of its proper divisors (6475995600).

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

2690917680 is a wasteful number, since it uses less digits than its factorization.

2690917680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7499 (or 7493 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 2690917680 is about 51874.0559432169. The cubic root of 2690917680 is about 1390.9135481393.

The spelling of 2690917680 in words is "two billion, six hundred ninety million, nine hundred seventeen thousand, six hundred eighty".