716977531 has 2 divisors, whose sum is σ = 716977532. Its totient is φ = 716977530.

The previous prime is 716977529. The next prime is 716977549. The reversal of 716977531 is 135779617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 716977531 - 2¹ = 716977529 is a prime.

It is a super-2 number, since 2×716977531² = 1028113559917711922, which contains 22 as substring.

Together with 716977529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (716977511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358488765 + 358488766.

It is an arithmetic number, because the mean of its divisors is an integer number (358488766).

Almost surely, 2^716977531 is an apocalyptic number.

716977531 is a deficient number, since it is larger than the sum of its proper divisors (1).

716977531 is an equidigital number, since it uses as much as digits as its factorization.

716977531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 277830, while the sum is 46.

The square root of 716977531 is about 26776.4361146139. The cubic root of 716977531 is about 895.0250322264.

The spelling of 716977531 in words is "seven hundred sixteen million, nine hundred seventy-seven thousand, five hundred thirty-one".