64980275 has 12 divisors (see below), whose sum is σ = 80706144. Its totient is φ = 51900000.

The previous prime is 64980217. The next prime is 64980277. The reversal of 64980275 is 57208946.

It is not a de Polignac number, because 64980275 - 2⁶ = 64980211 is a prime.

It is a super-2 number, since 2×64980275² = 8444872278151250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64980277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17045 + ... + 20505.

It is an arithmetic number, because the mean of its divisors is an integer number (6725512).

Almost surely, 2^64980275 is an apocalyptic number.

64980275 is a deficient number, since it is larger than the sum of its proper divisors (15725869).

64980275 is a wasteful number, since it uses less digits than its factorization.

64980275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222 (or 4217 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 64980275 is about 8061.0343629090. The cubic root of 64980275 is about 402.0319005567.

The spelling of 64980275 in words is "sixty-four million, nine hundred eighty thousand, two hundred seventy-five".