716772491 has 2 divisors, whose sum is σ = 716772492. Its totient is φ = 716772490.

The previous prime is 716772449. The next prime is 716772527. The reversal of 716772491 is 194277617.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 716772491 - 2²⁶ = 649663627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (716772401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358386245 + 358386246.

It is an arithmetic number, because the mean of its divisors is an integer number (358386246).

Almost surely, 2^716772491 is an apocalyptic number.

716772491 is a deficient number, since it is larger than the sum of its proper divisors (1).

716772491 is an equidigital number, since it uses as much as digits as its factorization.

716772491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 44.

The square root of 716772491 is about 26772.6071012892. The cubic root of 716772491 is about 894.9397048527.

The spelling of 716772491 in words is "seven hundred sixteen million, seven hundred seventy-two thousand, four hundred ninety-one".