64630288 has 20 divisors (see below), whose sum is σ = 129261568. Its totient is φ = 31272480.

The previous prime is 64630283. The next prime is 64630289. The reversal of 64630288 is 88203646.

64630288 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (64630283) 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, 64656 + ... + 65647.

Almost surely, 2^64630288 is an apocalyptic number.

It is an amenable number.

64630288 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64630288 is a wasteful number, since it uses less digits than its factorization.

64630288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130342 (or 130336 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 64630288 is about 8039.2964866336. The cubic root of 64630288 is about 401.3088128515.

The spelling of 64630288 in words is "sixty-four million, six hundred thirty thousand, two hundred eighty-eight".