64731488 has 24 divisors (see below), whose sum is σ = 127702008. Its totient is φ = 32299264.

The previous prime is 64731487. The next prime is 64731493. The reversal of 64731488 is 88413746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64731487) 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, 16220 + ... + 19812.

It is an arithmetic number, because the mean of its divisors is an integer number (5320917).

Almost surely, 2^64731488 is an apocalyptic number.

It is an amenable number.

64731488 is a deficient number, since it is larger than the sum of its proper divisors (62970520).

64731488 is a wasteful number, since it uses less digits than its factorization.

64731488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166 (or 4158 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 64731488 is about 8045.5881077768. The cubic root of 64731488 is about 401.5181639888.

The spelling of 64731488 in words is "sixty-four million, seven hundred thirty-one thousand, four hundred eighty-eight".