64874431 has 12 divisors (see below), whose sum is σ = 70789288. Its totient is φ = 59398272.

The previous prime is 64874393. The next prime is 64874449. The reversal of 64874431 is 13447846.

It is not a de Polignac number, because 64874431 - 2¹¹ = 64872383 is a prime.

It is a super-2 number, since 2×64874431² = 8417383595147522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64874471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7660 + ... + 13726.

Almost surely, 2^64874431 is an apocalyptic number.

64874431 is a deficient number, since it is larger than the sum of its proper divisors (5914857).

64874431 is a wasteful number, since it uses less digits than its factorization.

64874431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6138 (or 6121 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 64874431 is about 8054.4665248544. The cubic root of 64874431 is about 401.8134968971.

The spelling of 64874431 in words is "sixty-four million, eight hundred seventy-four thousand, four hundred thirty-one".