400704564 has 24 divisors (see below), whose sum is σ = 1006899040. Its totient is φ = 123293664.

The previous prime is 400704541. The next prime is 400704589. The reversal of 400704564 is 465407004.

It is a super-2 number, since 2×400704564² = 321128295220860192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1284154 + ... + 1284465.

Almost surely, 2^400704564 is an apocalyptic number.

It is an amenable number.

400704564 is an abundant number, since it is smaller than the sum of its proper divisors (606194476).

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

400704564 is a wasteful number, since it uses less digits than its factorization.

400704564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568639 (or 2568637 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 400704564 is about 20017.6063504106. The cubic root of 400704564 is about 737.2386519723.

The spelling of 400704564 in words is "four hundred million, seven hundred four thousand, five hundred sixty-four".