64406585 has 16 divisors (see below), whose sum is σ = 78744960. Its totient is φ = 50561280.

The previous prime is 64406579. The next prime is 64406611. The reversal of 64406585 is 58560446.

It is not a de Polignac number, because 64406585 - 2⁶ = 64406521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148529 + ... + 148961.

It is an arithmetic number, because the mean of its divisors is an integer number (4921560).

Almost surely, 2^64406585 is an apocalyptic number.

It is an amenable number.

64406585 is a deficient number, since it is larger than the sum of its proper divisors (14338375).

64406585 is a wasteful number, since it uses less digits than its factorization.

64406585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 64406585 is about 8025.3713309728. The cubic root of 64406585 is about 400.8452646444.

The spelling of 64406585 in words is "sixty-four million, four hundred six thousand, five hundred eighty-five".