64791875 has 20 divisors (see below), whose sum is σ = 82005000. Its totient is φ = 51168000.

The previous prime is 64791871. The next prime is 64791877. The reversal of 64791875 is 57819746.

It is not a de Polignac number, because 64791875 - 2² = 64791871 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (64791871) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 51251 + ... + 52499.

It is an arithmetic number, because the mean of its divisors is an integer number (4100250).

Almost surely, 2^64791875 is an apocalyptic number.

64791875 is a deficient number, since it is larger than the sum of its proper divisors (17213125).

64791875 is an equidigital number, since it uses as much as digits as its factorization.

64791875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1337 counting only the distinct ones).

The product of its digits is 423360, while the sum is 47.

The square root of 64791875 is about 8049.3400350588. The cubic root of 64791875 is about 401.6429818701.

The spelling of 64791875 in words is "sixty-four million, seven hundred ninety-one thousand, eight hundred seventy-five".