64434664 has 32 divisors (see below), whose sum is σ = 138441600. Its totient is φ = 27541440.

The previous prime is 64434659. The next prime is 64434677. The reversal of 64434664 is 46643446.

It is a super-4 number, since 4×64434664⁴ (a number of 32 digits) contains 4444 as substring.

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, 23274 + ... + 25894.

It is an arithmetic number, because the mean of its divisors is an integer number (4326300).

Almost surely, 2^64434664 is an apocalyptic number.

It is an amenable number.

64434664 is an abundant number, since it is smaller than the sum of its proper divisors (74006936).

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

64434664 is a wasteful number, since it uses less digits than its factorization.

64434664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073 (or 3069 counting only the distinct ones).

The product of its digits is 165888, while the sum is 37.

The square root of 64434664 is about 8027.1205298039. The cubic root of 64434664 is about 400.9035076482.

The spelling of 64434664 in words is "sixty-four million, four hundred thirty-four thousand, six hundred sixty-four".