64457392 has 20 divisors (see below), whose sum is σ = 126125856. Its totient is φ = 31908800.

The previous prime is 64457389. The next prime is 64457423. The reversal of 64457392 is 29375446.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18328 + ... + 21559.

Almost surely, 2^64457392 is an apocalyptic number.

It is an amenable number.

64457392 is a deficient number, since it is larger than the sum of its proper divisors (61668464).

64457392 is a wasteful number, since it uses less digits than its factorization.

64457392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39996 (or 39990 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 64457392 is about 8028.5361056671. The cubic root of 64457392 is about 400.9506389243.

The spelling of 64457392 in words is "sixty-four million, four hundred fifty-seven thousand, three hundred ninety-two".