64327764 has 24 divisors (see below), whose sum is σ = 150236128. Its totient is φ = 21422880.

The previous prime is 64327751. The next prime is 64327799. The reversal of 64327764 is 46772346.

It is a super-2 number, since 2×64327764² = 8276122442479392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17799 + ... + 21105.

Almost surely, 2^64327764 is an apocalyptic number.

It is an amenable number.

64327764 is an abundant number, since it is smaller than the sum of its proper divisors (85908364).

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

64327764 is a wasteful number, since it uses less digits than its factorization.

64327764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935 (or 4933 counting only the distinct ones).

The product of its digits is 169344, while the sum is 39.

The square root of 64327764 is about 8020.4590891046. The cubic root of 64327764 is about 400.6816792901.

It can be divided in two parts, 6432 and 7764, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 64327764 in words is "sixty-four million, three hundred twenty-seven thousand, seven hundred sixty-four".