813374564 has 24 divisors (see below), whose sum is σ = 1467116448. Its totient is φ = 394320960.

The previous prime is 813374561. The next prime is 813374587. The reversal of 813374564 is 465473318.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (813374561) 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, 11519 + ... + 41945.

It is an arithmetic number, because the mean of its divisors is an integer number (61129852).

Almost surely, 2^813374564 is an apocalyptic number.

It is an amenable number.

813374564 is a deficient number, since it is larger than the sum of its proper divisors (653741884).

813374564 is a wasteful number, since it uses less digits than its factorization.

813374564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30635 (or 30633 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 813374564 is about 28519.7223689152. The cubic root of 813374564 is about 933.4624711904.

The spelling of 813374564 in words is "eight hundred thirteen million, three hundred seventy-four thousand, five hundred sixty-four".