64304665 has 16 divisors (see below), whose sum is σ = 81502848. Its totient is φ = 48606976.

The previous prime is 64304663. The next prime is 64304671. The reversal of 64304665 is 56640346.

It is a cyclic number.

It is not a de Polignac number, because 64304665 - 2¹ = 64304663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64304665.

It is not an unprimeable number, because it can be changed into a prime (64304663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6177 + ... + 12913.

It is an arithmetic number, because the mean of its divisors is an integer number (5093928).

Almost surely, 2^64304665 is an apocalyptic number.

It is an amenable number.

64304665 is a deficient number, since it is larger than the sum of its proper divisors (17198183).

64304665 is a wasteful number, since it uses less digits than its factorization.

64304665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6848.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 64304665 is about 8019.0189549595. The cubic root of 64304665 is about 400.6337142355.

The spelling of 64304665 in words is "sixty-four million, three hundred four thousand, six hundred sixty-five".