813037568 has 48 divisors (see below), whose sum is σ = 1857950640. Its totient is φ = 348438528.

The previous prime is 813037567. The next prime is 813037583. The reversal of 813037568 is 865730318.

It is a super-2 number, since 2×813037568² = 1322060173958709248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813037567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14021 + ... + 42692.

It is an arithmetic number, because the mean of its divisors is an integer number (38707305).

Almost surely, 2^813037568 is an apocalyptic number.

It is an amenable number.

813037568 is an abundant number, since it is smaller than the sum of its proper divisors (1044913072).

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

813037568 is an equidigital number, since it uses as much as digits as its factorization.

813037568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56742 (or 56722 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 813037568 is about 28513.8136347981. The cubic root of 813037568 is about 933.3335365079. Note that the first 3 decimals are identical.

The spelling of 813037568 in words is "eight hundred thirteen million, thirty-seven thousand, five hundred sixty-eight".