64716513 has 8 divisors (see below), whose sum is σ = 86431008. Its totient is φ = 43073184.

The previous prime is 64716497. The next prime is 64716517. The reversal of 64716513 is 31561746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64716513 - 2⁴ = 64716497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64716517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15631 + ... + 19332.

It is an arithmetic number, because the mean of its divisors is an integer number (10803876).

Almost surely, 2^64716513 is an apocalyptic number.

It is an amenable number.

64716513 is a deficient number, since it is larger than the sum of its proper divisors (21714495).

64716513 is a wasteful number, since it uses less digits than its factorization.

64716513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35583.

The product of its digits is 15120, while the sum is 33.

The square root of 64716513 is about 8044.6574196792. The cubic root of 64716513 is about 401.4871991605.

The spelling of 64716513 in words is "sixty-four million, seven hundred sixteen thousand, five hundred thirteen".