681113504 has 12 divisors (see below), whose sum is σ = 1340942274. Its totient is φ = 340556736.

The previous prime is 681113473. The next prime is 681113509. The reversal of 681113504 is 405311186.

It can be written as a sum of positive squares in only one way, i.e., 460531600 + 220581904 = 21460^2 + 14852^2 .

It is not an unprimeable number, because it can be changed into a prime (681113509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10642367 + ... + 10642430.

Almost surely, 2^681113504 is an apocalyptic number.

It is an amenable number.

681113504 is a deficient number, since it is larger than the sum of its proper divisors (659828770).

681113504 is a wasteful number, since it uses less digits than its factorization.

681113504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21284807 (or 21284799 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 681113504 is about 26098.1513521552. The cubic root of 681113504 is about 879.8456616383.

The spelling of 681113504 in words is "six hundred eighty-one million, one hundred thirteen thousand, five hundred four".