654079931 has 2 divisors, whose sum is σ = 654079932. Its totient is φ = 654079930.

The previous prime is 654079919. The next prime is 654079963. The reversal of 654079931 is 139970456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654079931 - 2²² = 649885627 is a prime.

It is a super-2 number, since 2×654079931² = 855641112273929522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (654079901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327039965 + 327039966.

It is an arithmetic number, because the mean of its divisors is an integer number (327039966).

Almost surely, 2^654079931 is an apocalyptic number.

654079931 is a deficient number, since it is larger than the sum of its proper divisors (1).

654079931 is an equidigital number, since it uses as much as digits as its factorization.

654079931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 654079931 is about 25574.9864320590. The cubic root of 654079931 is about 868.0477345498.

The spelling of 654079931 in words is "six hundred fifty-four million, seventy-nine thousand, nine hundred thirty-one".