66374231 has 16 divisors (see below), whose sum is σ = 83010048. Its totient is φ = 51559200.

The previous prime is 66374213. The next prime is 66374249. The reversal of 66374231 is 13247366.

It is an interprime number because it is at equal distance from previous prime (66374213) and next prime (66374249).

It is a de Polignac number, because none of the positive numbers 2^k-66374231 is a prime.

It is a super-2 number, since 2×66374231² = 8811077081682722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66374281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27566 + ... + 29876.

It is an arithmetic number, because the mean of its divisors is an integer number (5188128).

Almost surely, 2^66374231 is an apocalyptic number.

66374231 is a deficient number, since it is larger than the sum of its proper divisors (16635817).

66374231 is a wasteful number, since it uses less digits than its factorization.

66374231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702.

The product of its digits is 18144, while the sum is 32.

The square root of 66374231 is about 8147.0381734714. The cubic root of 66374231 is about 404.8863797518.

The spelling of 66374231 in words is "sixty-six million, three hundred seventy-four thousand, two hundred thirty-one".