400564604 has 48 divisors (see below), whose sum is σ = 779735040. Its totient is φ = 178536960.

The previous prime is 400564601. The next prime is 400564621. The reversal of 400564604 is 406465004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400564601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541667 + ... + 542405.

It is an arithmetic number, because the mean of its divisors is an integer number (16244480).

Almost surely, 2^400564604 is an apocalyptic number.

400564604 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400564604 is a deficient number, since it is larger than the sum of its proper divisors (379170436).

400564604 is a wasteful number, since it uses less digits than its factorization.

400564604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 400564604 is about 20014.1101226110. The cubic root of 400564604 is about 737.1528065666.

The spelling of 400564604 in words is "four hundred million, five hundred sixty-four thousand, six hundred four".