64515275 has 24 divisors (see below), whose sum is σ = 87643200. Its totient is φ = 46720800.

The previous prime is 64515259. The next prime is 64515277. The reversal of 64515275 is 57251546.

It is not a de Polignac number, because 64515275 - 2⁴ = 64515259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64515277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103916 + ... + 104534.

It is an arithmetic number, because the mean of its divisors is an integer number (3651800).

Almost surely, 2^64515275 is an apocalyptic number.

64515275 is a deficient number, since it is larger than the sum of its proper divisors (23127925).

64515275 is a wasteful number, since it uses less digits than its factorization.

64515275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019 (or 1014 counting only the distinct ones).

The product of its digits is 42000, while the sum is 35.

The square root of 64515275 is about 8032.1401257697. The cubic root of 64515275 is about 401.0706214510.

The spelling of 64515275 in words is "sixty-four million, five hundred fifteen thousand, two hundred seventy-five".