64464615 has 12 divisors (see below), whose sum is σ = 111738744. Its totient is φ = 34381104.

The previous prime is 64464613. The next prime is 64464641. The reversal of 64464615 is 51646446.

64464615 is a `hidden beast` number, since 6 + 4 + 4 + 646 + 1 + 5 = 666.

It is not a de Polignac number, because 64464615 - 2¹ = 64464613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64464615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64464613) 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, 716229 + ... + 716318.

It is an arithmetic number, because the mean of its divisors is an integer number (9311562).

Almost surely, 2^64464615 is an apocalyptic number.

64464615 is a deficient number, since it is larger than the sum of its proper divisors (47274129).

64464615 is a wasteful number, since it uses less digits than its factorization.

64464615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432558 (or 1432555 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 64464615 is about 8028.9859260058. The cubic root of 64464615 is about 400.9656150101.

The spelling of 64464615 in words is "sixty-four million, four hundred sixty-four thousand, six hundred fifteen".