64717713 has 6 divisors (see below), whose sum is σ = 93481154. Its totient is φ = 43145136.

The previous prime is 64717687. The next prime is 64717727. The reversal of 64717713 is 31771746.

64717713 is a `hidden beast` number, since 647 + 1 + 7 + 7 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 58798224 + 5919489 = 7668^2 + 2433^2 .

It is not a de Polignac number, because 64717713 - 2²² = 60523409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64717753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3595420 + ... + 3595437.

Almost surely, 2^64717713 is an apocalyptic number.

It is an amenable number.

64717713 is a deficient number, since it is larger than the sum of its proper divisors (28763441).

64717713 is a wasteful number, since it uses less digits than its factorization.

64717713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190863 (or 7190860 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 64717713 is about 8044.7320029943. The cubic root of 64717713 is about 401.4896806584.

The spelling of 64717713 in words is "sixty-four million, seven hundred seventeen thousand, seven hundred thirteen".