666675231 has 8 divisors (see below), whose sum is σ = 889117824. Its totient is φ = 444341400.

The previous prime is 666675227. The next prime is 666675239. The reversal of 666675231 is 132576666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 666675231 - 2² = 666675227 is a prime.

It is a super-2 number, since 2×666675231² = 888911727257806722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666675239) 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 7 ways as a sum of consecutive naturals, for example, 11611 + ... + 38316.

It is an arithmetic number, because the mean of its divisors is an integer number (111139728).

Almost surely, 2^666675231 is an apocalyptic number.

666675231 is a deficient number, since it is larger than the sum of its proper divisors (222442593).

666675231 is a wasteful number, since it uses less digits than its factorization.

666675231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54381.

The product of its digits is 272160, while the sum is 42.

The square root of 666675231 is about 25820.0548217853. The cubic root of 666675231 is about 873.5842055374.

The spelling of 666675231 in words is "six hundred sixty-six million, six hundred seventy-five thousand, two hundred thirty-one".