64164687 has 16 divisors (see below), whose sum is σ = 89587968. Its totient is φ = 40772160.

The previous prime is 64164649. The next prime is 64164719. The reversal of 64164687 is 78646146.

It is not a de Polignac number, because 64164687 - 2²⁰ = 63116111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64165687) 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, 20112 + ... + 23082.

It is an arithmetic number, because the mean of its divisors is an integer number (5599248).

Almost surely, 2^64164687 is an apocalyptic number.

64164687 is a deficient number, since it is larger than the sum of its proper divisors (25423281).

64164687 is a wasteful number, since it uses less digits than its factorization.

64164687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310.

The product of its digits is 193536, while the sum is 42.

The square root of 64164687 is about 8010.2863244706. The cubic root of 64164687 is about 400.3428040462.

The spelling of 64164687 in words is "sixty-four million, one hundred sixty-four thousand, six hundred eighty-seven".