64265015 has 32 divisors (see below), whose sum is σ = 87298560. Its totient is φ = 45212160.

The previous prime is 64265009. The next prime is 64265017. The reversal of 64265015 is 51056246.

It is not a de Polignac number, because 64265015 - 2¹⁴ = 64248631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64265017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2073050 + ... + 2073080.

It is an arithmetic number, because the mean of its divisors is an integer number (2728080).

Almost surely, 2^64265015 is an apocalyptic number.

64265015 is a deficient number, since it is larger than the sum of its proper divisors (23033545).

64265015 is an equidigital number, since it uses as much as digits as its factorization.

64265015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 64265015 is about 8016.5463261931. The cubic root of 64265015 is about 400.5513542554.

The spelling of 64265015 in words is "sixty-four million, two hundred sixty-five thousand, fifteen".