681407659304 has 32 divisors (see below), whose sum is σ = 1345358440800. Its totient is φ = 322658072640.

The previous prime is 681407659271. The next prime is 681407659307. The reversal of 681407659304 is 403956704186.

It is a super-2 number, since 2×681407659304² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (681407659307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358862 + ... + 1221309.

It is an arithmetic number, because the mean of its divisors is an integer number (42042451275).

Almost surely, 2^681407659304 is an apocalyptic number.

It is an amenable number.

681407659304 is a deficient number, since it is larger than the sum of its proper divisors (663950781496).

681407659304 is a wasteful number, since it uses less digits than its factorization.

681407659304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583033 (or 1583029 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 681407659304 in words is "six hundred eighty-one billion, four hundred seven million, six hundred fifty-nine thousand, three hundred four".