64316664 has 48 divisors (see below), whose sum is σ = 180203400. Its totient is φ = 20698944.

The previous prime is 64316663. The next prime is 64316683. The reversal of 64316664 is 46661346.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64316663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13314 + ... + 17489.

Almost surely, 2^64316664 is an apocalyptic number.

It is an amenable number.

64316664 is an abundant number, since it is smaller than the sum of its proper divisors (115886736).

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

64316664 is a wasteful number, since it uses less digits than its factorization.

64316664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30844 (or 30837 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 64316664 is about 8019.7670789120. The cubic root of 64316664 is about 400.6586315825.

It can be divided in two parts, 64316 and 664, that added together give a triangular number (64980 = T₃₆₀).

The spelling of 64316664 in words is "sixty-four million, three hundred sixteen thousand, six hundred sixty-four".