64368464 has 20 divisors (see below), whose sum is σ = 124852500. Its totient is φ = 32148480.

The previous prime is 64368457. The next prime is 64368539. The reversal of 64368464 is 46486346.

It can be written as a sum of positive squares in 2 ways, for example, as 38440000 + 25928464 = 6200^2 + 5092^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18374 + ... + 21594.

It is an arithmetic number, because the mean of its divisors is an integer number (6242625).

Almost surely, 2^64368464 is an apocalyptic number.

It is an amenable number.

64368464 is a deficient number, since it is larger than the sum of its proper divisors (60484036).

64368464 is a wasteful number, since it uses less digits than its factorization.

64368464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4478 (or 4472 counting only the distinct ones).

The product of its digits is 331776, while the sum is 41.

The square root of 64368464 is about 8022.9959491452. The cubic root of 64368464 is about 400.7661648748.

The spelling of 64368464 in words is "sixty-four million, three hundred sixty-eight thousand, four hundred sixty-four".