64660268 has 48 divisors (see below), whose sum is σ = 126282240. Its totient is φ = 28828800.

The previous prime is 64660243. The next prime is 64660273. The reversal of 64660268 is 86206646.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123848 + ... + 124368.

It is an arithmetic number, because the mean of its divisors is an integer number (2630880).

Almost surely, 2^64660268 is an apocalyptic number.

It is an amenable number.

64660268 is a deficient number, since it is larger than the sum of its proper divisors (61621972).

64660268 is a wasteful number, since it uses less digits than its factorization.

64660268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 64660268 is about 8041.1608614677. The cubic root of 64660268 is about 401.3708548587.

The spelling of 64660268 in words is "sixty-four million, six hundred sixty thousand, two hundred sixty-eight".