716459561 has 2 divisors, whose sum is σ = 716459562. Its totient is φ = 716459560.

The previous prime is 716459551. The next prime is 716459563. The reversal of 716459561 is 165954617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408807961 + 307651600 = 20219^2 + 17540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-716459561 is a prime.

Together with 716459563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (716459563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358229780 + 358229781.

It is an arithmetic number, because the mean of its divisors is an integer number (358229781).

Almost surely, 2^716459561 is an apocalyptic number.

It is an amenable number.

716459561 is a deficient number, since it is larger than the sum of its proper divisors (1).

716459561 is an equidigital number, since it uses as much as digits as its factorization.

716459561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 716459561 is about 26766.7622434989. The cubic root of 716459561 is about 894.8094476927.

The spelling of 716459561 in words is "seven hundred sixteen million, four hundred fifty-nine thousand, five hundred sixty-one".