64504488 has 32 divisors (see below), whose sum is σ = 161474400. Its totient is φ = 21473088.

The previous prime is 64504483. The next prime is 64504493. The reversal of 64504488 is 88440546.

It is an interprime number because it is at equal distance from previous prime (64504483) and next prime (64504493).

It is not an unprimeable number, because it can be changed into a prime (64504483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25003 + ... + 27461.

It is an arithmetic number, because the mean of its divisors is an integer number (5046075).

Almost surely, 2^64504488 is an apocalyptic number.

It is an amenable number.

64504488 is an abundant number, since it is smaller than the sum of its proper divisors (96969912).

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

64504488 is a wasteful number, since it uses less digits than its factorization.

64504488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561 (or 3557 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 64504488 is about 8031.4686079197. The cubic root of 64504488 is about 401.0482671070.

The spelling of 64504488 in words is "sixty-four million, five hundred four thousand, four hundred eighty-eight".