64974969 has 24 divisors (see below), whose sum is σ = 99751392. Its totient is φ = 40613760.

The previous prime is 64974961. The next prime is 64974971. The reversal of 64974969 is 96947946.

64974969 is a `hidden beast` number, since 64 + 97 + 496 + 9 = 666.

It is not a de Polignac number, because 64974969 - 2³ = 64974961 is a prime.

It is a super-2 number, since 2×64974969² = 8443493193101922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64974961) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 50002 + ... + 51284.

It is an arithmetic number, because the mean of its divisors is an integer number (4156308).

Almost surely, 2^64974969 is an apocalyptic number.

It is an amenable number.

64974969 is a deficient number, since it is larger than the sum of its proper divisors (34776423).

64974969 is a wasteful number, since it uses less digits than its factorization.

64974969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 1634 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 64974969 is about 8060.7052420989. The cubic root of 64974969 is about 402.0209575470.

The spelling of 64974969 in words is "sixty-four million, nine hundred seventy-four thousand, nine hundred sixty-nine".