64805875 has 8 divisors (see below), whose sum is σ = 80877888. Its totient is φ = 51844600.

The previous prime is 64805863. The next prime is 64805879. The reversal of 64805875 is 57850846.

It is not a de Polignac number, because 64805875 - 2⁵ = 64805843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64805879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259099 + ... + 259348.

It is an arithmetic number, because the mean of its divisors is an integer number (10109736).

Almost surely, 2^64805875 is an apocalyptic number.

64805875 is a deficient number, since it is larger than the sum of its proper divisors (16072013).

64805875 is an equidigital number, since it uses as much as digits as its factorization.

64805875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518462 (or 518452 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 64805875 is about 8050.2096245998. The cubic root of 64805875 is about 401.6719083201.

The spelling of 64805875 in words is "sixty-four million, eight hundred five thousand, eight hundred seventy-five".