64490888 has 32 divisors (see below), whose sum is σ = 150759360. Its totient is φ = 25126080.

The previous prime is 64490879. The next prime is 64490893. The reversal of 64490888 is 88809446.

It is an unprimeable number.

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, 51731 + ... + 52962.

It is an arithmetic number, because the mean of its divisors is an integer number (4711230).

Almost surely, 2^64490888 is an apocalyptic number.

It is an amenable number.

64490888 is an abundant number, since it is smaller than the sum of its proper divisors (86268472).

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

64490888 is a wasteful number, since it uses less digits than its factorization.

64490888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104717 (or 104713 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The square root of 64490888 is about 8030.6218937265. The cubic root of 64490888 is about 401.0200797154.

The spelling of 64490888 in words is "sixty-four million, four hundred ninety thousand, eight hundred eighty-eight".