64641315 has 16 divisors (see below), whose sum is σ = 103546368. Its totient is φ = 34435296.

The previous prime is 64641307. The next prime is 64641337. The reversal of 64641315 is 51314646.

It is not a de Polignac number, because 64641315 - 2³ = 64641307 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14592 + ... + 18498.

It is an arithmetic number, because the mean of its divisors is an integer number (6471648).

Almost surely, 2^64641315 is an apocalyptic number.

64641315 is a deficient number, since it is larger than the sum of its proper divisors (38905053).

64641315 is a wasteful number, since it uses less digits than its factorization.

64641315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018.

The product of its digits is 8640, while the sum is 30.

The square root of 64641315 is about 8039.9822760999. The cubic root of 64641315 is about 401.3316348687.

The spelling of 64641315 in words is "sixty-four million, six hundred forty-one thousand, three hundred fifteen".