64105715 has 16 divisors (see below), whose sum is σ = 84499200. Its totient is φ = 46471392.

The previous prime is 64105711. The next prime is 64105729. The reversal of 64105715 is 51750146.

It is a cyclic number.

It is not a de Polignac number, because 64105715 - 2² = 64105711 is a prime.

It is a super-2 number, since 2×64105715² = 8219085391322450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64105711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12485 + ... + 16854.

It is an arithmetic number, because the mean of its divisors is an integer number (5281200).

Almost surely, 2^64105715 is an apocalyptic number.

64105715 is a deficient number, since it is larger than the sum of its proper divisors (20393485).

64105715 is a wasteful number, since it uses less digits than its factorization.

64105715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29386.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 64105715 is about 8006.6044613182. The cubic root of 64105715 is about 400.2201184308.

The spelling of 64105715 in words is "sixty-four million, one hundred five thousand, seven hundred fifteen".