64475975 has 12 divisors (see below), whose sum is σ = 80464344. Its totient is φ = 51249120.

The previous prime is 64475959. The next prime is 64475989. The reversal of 64475975 is 57957446.

It is not a de Polignac number, because 64475975 - 2⁴ = 64475959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4289 + ... + 12138.

It is an arithmetic number, because the mean of its divisors is an integer number (6705362).

Almost surely, 2^64475975 is an apocalyptic number.

64475975 is a deficient number, since it is larger than the sum of its proper divisors (15988369).

64475975 is a wasteful number, since it uses less digits than its factorization.

64475975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16594 (or 16589 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 47.

The square root of 64475975 is about 8029.6933316285. The cubic root of 64475975 is about 400.9891664414.

The spelling of 64475975 in words is "sixty-four million, four hundred seventy-five thousand, nine hundred seventy-five".