716787913 has 2 divisors, whose sum is σ = 716787914. Its totient is φ = 716787912.

The previous prime is 716787857. The next prime is 716787931. The reversal of 716787913 is 319787617.

Together with next prime (716787931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 707134464 + 9653449 = 26592^2 + 3107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-716787913 is a prime.

It is not a weakly prime, because it can be changed into another prime (716787943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358393956 + 358393957.

It is an arithmetic number, because the mean of its divisors is an integer number (358393957).

Almost surely, 2^716787913 is an apocalyptic number.

It is an amenable number.

716787913 is a deficient number, since it is larger than the sum of its proper divisors (1).

716787913 is an equidigital number, since it uses as much as digits as its factorization.

716787913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 49.

The square root of 716787913 is about 26772.8951180107. The cubic root of 716787913 is about 894.9461232822.

The spelling of 716787913 in words is "seven hundred sixteen million, seven hundred eighty-seven thousand, nine hundred thirteen".