63664460 has 24 divisors (see below), whose sum is σ = 139509216. Its totient is φ = 24358400.

The previous prime is 63664453. The next prime is 63664477. The reversal of 63664460 is 6446636.

It is a self number, because there is not a number n which added to its sum of digits gives 63664460.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68741 + ... + 69660.

It is an arithmetic number, because the mean of its divisors is an integer number (5812884).

Almost surely, 2^63664460 is an apocalyptic number.

It is an amenable number.

63664460 is an abundant number, since it is smaller than the sum of its proper divisors (75844756).

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

63664460 is a wasteful number, since it uses less digits than its factorization.

63664460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138433 (or 138431 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 63664460 is about 7979.0011906253. The cubic root of 63664460 is about 399.2997331145.

The spelling of 63664460 in words is "sixty-three million, six hundred sixty-four thousand, four hundred sixty".