64774464 has 28 divisors (see below), whose sum is σ = 171382944. Its totient is φ = 21591424.

The previous prime is 64774447. The next prime is 64774481. The reversal of 64774464 is 46447746.

It is an interprime number because it is at equal distance from previous prime (64774447) and next prime (64774481).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 168492 + ... + 168875.

Almost surely, 2^64774464 is an apocalyptic number.

64774464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64774464 is an abundant number, since it is smaller than the sum of its proper divisors (106608480).

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

64774464 is a wasteful number, since it uses less digits than its factorization.

64774464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337382 (or 337372 counting only the distinct ones).

The product of its digits is 451584, while the sum is 42.

The square root of 64774464 is about 8048.2584451545. The cubic root of 64774464 is about 401.6070018832.

The spelling of 64774464 in words is "sixty-four million, seven hundred seventy-four thousand, four hundred sixty-four".