64974231 has 20 divisors (see below), whose sum is σ = 110926992. Its totient is φ = 37127808.

The previous prime is 64974227. The next prime is 64974263. The reversal of 64974231 is 13247946.

64974231 is a `hidden beast` number, since 649 + 7 + 4 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 64974231 - 2² = 64974227 is a prime.

It is a super-2 number, since 2×64974231² = 8443301388082722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64970231) 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 19 ways as a sum of consecutive naturals, for example, 56730 + ... + 57863.

Almost surely, 2^64974231 is an apocalyptic number.

64974231 is a deficient number, since it is larger than the sum of its proper divisors (45952761).

64974231 is a wasteful number, since it uses less digits than its factorization.

64974231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114612 (or 114603 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 64974231 is about 8060.6594643366. The cubic root of 64974231 is about 402.0194354604.

The spelling of 64974231 in words is "sixty-four million, nine hundred seventy-four thousand, two hundred thirty-one".