64585816 has 16 divisors (see below), whose sum is σ = 121843800. Its totient is φ = 32094144.

The previous prime is 64585811. The next prime is 64585819. The reversal of 64585816 is 61858546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64585811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23461 + ... + 26068.

Almost surely, 2^64585816 is an apocalyptic number.

It is an amenable number.

64585816 is a deficient number, since it is larger than the sum of its proper divisors (57257984).

64585816 is a wasteful number, since it uses less digits than its factorization.

64585816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49698 (or 49694 counting only the distinct ones).

The product of its digits is 230400, while the sum is 43.

The square root of 64585816 is about 8036.5300970008. The cubic root of 64585816 is about 401.2167450757.

The spelling of 64585816 in words is "sixty-four million, five hundred eighty-five thousand, eight hundred sixteen".