716661431 has 2 divisors, whose sum is σ = 716661432. Its totient is φ = 716661430.

The previous prime is 716661409. The next prime is 716661457. The reversal of 716661431 is 134166617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 716661431 - 2¹⁰ = 716660407 is a prime.

It is a super-2 number, since 2×716661431² = 1027207213365935522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 716661391 and 716661400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (716660431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358330715 + 358330716.

It is an arithmetic number, because the mean of its divisors is an integer number (358330716).

Almost surely, 2^716661431 is an apocalyptic number.

716661431 is a deficient number, since it is larger than the sum of its proper divisors (1).

716661431 is an equidigital number, since it uses as much as digits as its factorization.

716661431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 716661431 is about 26770.5328859924. The cubic root of 716661431 is about 894.8934804515.

The spelling of 716661431 in words is "seven hundred sixteen million, six hundred sixty-one thousand, four hundred thirty-one".