64065015 has 24 divisors (see below), whose sum is σ = 126910368. Its totient is φ = 29286720.

The previous prime is 64065013. The next prime is 64065037. The reversal of 64065015 is 51056046.

It is a happy number.

64065015 is a `hidden beast` number, since 6 + 4 + 0 + 650 + 1 + 5 = 666.

It is not a de Polignac number, because 64065015 - 2¹ = 64065013 is a prime.

It is a super-2 number, since 2×64065015² = 8208652293900450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64065015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64065013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101376 + ... + 102005.

It is an arithmetic number, because the mean of its divisors is an integer number (5287932).

Almost surely, 2^64065015 is an apocalyptic number.

64065015 is a deficient number, since it is larger than the sum of its proper divisors (62845353).

64065015 is a wasteful number, since it uses less digits than its factorization.

64065015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203399 (or 203396 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 64065015 is about 8004.0624060536. The cubic root of 64065015 is about 400.1354020772.

The spelling of 64065015 in words is "sixty-four million, sixty-five thousand, fifteen".