715663831 has 2 divisors, whose sum is σ = 715663832. Its totient is φ = 715663830.

The previous prime is 715663813. The next prime is 715663843. The reversal of 715663831 is 138366517.

It is a happy number.

715663831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (715663813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 715663831 - 2⁷ = 715663703 is a prime.

It is a super-2 number, since 2×715663831² = 1024349438003193122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (715663801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357831915 + 357831916.

It is an arithmetic number, because the mean of its divisors is an integer number (357831916).

Almost surely, 2^715663831 is an apocalyptic number.

715663831 is a deficient number, since it is larger than the sum of its proper divisors (1).

715663831 is an equidigital number, since it uses as much as digits as its factorization.

715663831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 715663831 is about 26751.8939703341. The cubic root of 715663831 is about 894.4780540241.

The spelling of 715663831 in words is "seven hundred fifteen million, six hundred sixty-three thousand, eight hundred thirty-one".