64472900 has 18 divisors (see below), whose sum is σ = 139906410. Its totient is φ = 25789120.

The previous prime is 64472897. The next prime is 64472911. The reversal of 64472900 is 927446.

It can be written as a sum of positive squares in 3 ways, for example, as 440896 + 64032004 = 664^2 + 8002^2 .

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, 322265 + ... + 322464.

Almost surely, 2^64472900 is an apocalyptic number.

It is an amenable number.

64472900 is an abundant number, since it is smaller than the sum of its proper divisors (75433510).

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

64472900 is a wasteful number, since it uses less digits than its factorization.

64472900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644743 (or 644736 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 64472900 is about 8029.5018525435. The cubic root of 64472900 is about 400.9827916571.

The spelling of 64472900 in words is "sixty-four million, four hundred seventy-two thousand, nine hundred".