64972480 has 28 divisors (see below), whose sum is σ = 154716480. Its totient is φ = 25988864.

The previous prime is 64972469. The next prime is 64972489. The reversal of 64972480 is 8427946.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (64972489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101200 + ... + 101839.

Almost surely, 2^64972480 is an apocalyptic number.

It is an amenable number.

64972480 is an abundant number, since it is smaller than the sum of its proper divisors (89744000).

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

64972480 is a wasteful number, since it uses less digits than its factorization.

64972480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203056 (or 203046 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 64972480 is about 8060.5508496628. The cubic root of 64972480 is about 402.0158240679.

The spelling of 64972480 in words is "sixty-four million, nine hundred seventy-two thousand, four hundred eighty".