64845913 has 8 divisors (see below), whose sum is σ = 70834176. Its totient is φ = 58873200.

The previous prime is 64845829. The next prime is 64845919. The reversal of 64845913 is 31954846.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64845913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64845919) 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, 5928 + ... + 12838.

It is an arithmetic number, because the mean of its divisors is an integer number (8854272).

Almost surely, 2^64845913 is an apocalyptic number.

It is an amenable number.

64845913 is a deficient number, since it is larger than the sum of its proper divisors (5988263).

64845913 is a wasteful number, since it uses less digits than its factorization.

64845913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7775.

The product of its digits is 103680, while the sum is 40.

The square root of 64845913 is about 8052.6960081702. The cubic root of 64845913 is about 401.7546108481.

The spelling of 64845913 in words is "sixty-four million, eight hundred forty-five thousand, nine hundred thirteen".