64472472 has 48 divisors (see below), whose sum is σ = 183807000. Its totient is φ = 20359296.

The previous prime is 64472417. The next prime is 64472479. The reversal of 64472472 is 27427446.

It is a happy number.

64472472 is a `hidden beast` number, since 644 + 7 + 2 + 4 + 7 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64472479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22197 + ... + 24932.

Almost surely, 2^64472472 is an apocalyptic number.

It is an amenable number.

64472472 is an abundant number, since it is smaller than the sum of its proper divisors (119334528).

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

64472472 is a wasteful number, since it uses less digits than its factorization.

64472472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47160 (or 47153 counting only the distinct ones).

The product of its digits is 75264, while the sum is 36.

The square root of 64472472 is about 8029.4752007837. The cubic root of 64472472 is about 400.9819043540.

The spelling of 64472472 in words is "sixty-four million, four hundred seventy-two thousand, four hundred seventy-two".