64472904 has 24 divisors (see below), whose sum is σ = 174614310. Its totient is φ = 21490944.

The previous prime is 64472897. The next prime is 64472911. The reversal of 64472904 is 40927446.

64472904 is a `hidden beast` number, since 644 + 7 + 2 + 9 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (64472897) and next prime (64472911).

It can be written as a sum of positive squares in only one way, i.e., 49028004 + 15444900 = 7002^2 + 3930^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 447657 + ... + 447800.

Almost surely, 2^64472904 is an apocalyptic number.

It is an amenable number.

64472904 is an abundant number, since it is smaller than the sum of its proper divisors (110141406).

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

64472904 is a wasteful number, since it uses less digits than its factorization.

64472904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895469 (or 895462 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 64472904 is about 8029.5021016250. The cubic root of 64472904 is about 400.9827999496.

The spelling of 64472904 in words is "sixty-four million, four hundred seventy-two thousand, nine hundred four".