64344664 has 16 divisors (see below), whose sum is σ = 121775400. Its totient is φ = 31871232.

The previous prime is 64344617. The next prime is 64344667. The reversal of 64344664 is 46644346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64344667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36729 + ... + 38440.

Almost surely, 2^64344664 is an apocalyptic number.

It is an amenable number.

64344664 is a deficient number, since it is larger than the sum of its proper divisors (57430736).

64344664 is a wasteful number, since it uses less digits than its factorization.

64344664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75282 (or 75278 counting only the distinct ones).

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

The square root of 64344664 is about 8021.5125755683. The cubic root of 64344664 is about 400.7167648532.

The spelling of 64344664 in words is "sixty-four million, three hundred forty-four thousand, six hundred sixty-four".