64898975 has 12 divisors (see below), whose sum is σ = 80767896. Its totient is φ = 51730080.

The previous prime is 64898969. The next prime is 64898987. The reversal of 64898975 is 57989846.

It is not a de Polignac number, because 64898975 - 2⁸ = 64898719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64898975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2489 + ... + 11661.

It is an arithmetic number, because the mean of its divisors is an integer number (6730658).

Almost surely, 2^64898975 is an apocalyptic number.

64898975 is a deficient number, since it is larger than the sum of its proper divisors (15868921).

64898975 is a wasteful number, since it uses less digits than its factorization.

64898975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9466 (or 9461 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 56.

The square root of 64898975 is about 8055.9900074417. The cubic root of 64898975 is about 401.8641633249.

The spelling of 64898975 in words is "sixty-four million, eight hundred ninety-eight thousand, nine hundred seventy-five".