64807713 has 12 divisors (see below), whose sum is σ = 94296228. Its totient is φ = 42888960.

The previous prime is 64807709. The next prime is 64807739. The reversal of 64807713 is 31770846.

64807713 is a `hidden beast` number, since 648 + 0 + 7 + 7 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47568609 + 17239104 = 6897^2 + 4152^2 .

It is not a de Polignac number, because 64807713 - 2² = 64807709 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (64807793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25048 + ... + 27513.

It is an arithmetic number, because the mean of its divisors is an integer number (7858019).

Almost surely, 2^64807713 is an apocalyptic number.

It is an amenable number.

64807713 is a deficient number, since it is larger than the sum of its proper divisors (29488515).

64807713 is a wasteful number, since it uses less digits than its factorization.

64807713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52704 (or 52701 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 64807713 is about 8050.3237823084. The cubic root of 64807713 is about 401.6757056403.

The spelling of 64807713 in words is "sixty-four million, eight hundred seven thousand, seven hundred thirteen".