1685680596930 has 128 divisors (see below), whose sum is σ = 4441500241920. Its totient is φ = 406051511040.

The previous prime is 1685680596917. The next prime is 1685680596937. The reversal of 1685680596930 is 396950865861.

It is a super-2 number, since 2×1685680596930² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (1685680596937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 238457436 + ... + 238464504.

It is an arithmetic number, because the mean of its divisors is an integer number (34699220640).

Almost surely, 2^{1685680596930} is an apocalyptic number.

1685680596930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1685680596930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2220750120960).

1685680596930 is an abundant number, since it is smaller than the sum of its proper divisors (2755819644990).

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

1685680596930 is a wasteful number, since it uses less digits than its factorization.

1685680596930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11584.

The product of its (nonzero) digits is 83980800, while the sum is 66.

The spelling of 1685680596930 in words is "one trillion, six hundred eighty-five billion, six hundred eighty million, five hundred ninety-six thousand, nine hundred thirty".