654079331 has 2 divisors, whose sum is σ = 654079332. Its totient is φ = 654079330.

The previous prime is 654079319. The next prime is 654079379. The reversal of 654079331 is 133970456.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654079331 is a prime.

It is a super-2 number, since 2×654079331² = 855639542482815122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (654079931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327039665 + 327039666.

It is an arithmetic number, because the mean of its divisors is an integer number (327039666).

Almost surely, 2^654079331 is an apocalyptic number.

654079331 is a deficient number, since it is larger than the sum of its proper divisors (1).

654079331 is an equidigital number, since it uses as much as digits as its factorization.

654079331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 654079331 is about 25574.9747018448. The cubic root of 654079331 is about 868.0474691242.

The spelling of 654079331 in words is "six hundred fifty-four million, seventy-nine thousand, three hundred thirty-one".