716664551 has 2 divisors, whose sum is σ = 716664552. Its totient is φ = 716664550.

The previous prime is 716664523. The next prime is 716664587. The reversal of 716664551 is 155466617.

It is a weak prime.

It is an emirp because it is prime and its reverse (155466617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 716664551 - 2¹⁴ = 716648167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 716664499 and 716664508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (716654551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358332275 + 358332276.

It is an arithmetic number, because the mean of its divisors is an integer number (358332276).

Almost surely, 2^716664551 is an apocalyptic number.

716664551 is a deficient number, since it is larger than the sum of its proper divisors (1).

716664551 is an equidigital number, since it uses as much as digits as its factorization.

716664551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 716664551 is about 26770.5911589565. The cubic root of 716664551 is about 894.8947790953.

It can be divided in two parts, 7166 and 64551, that added together give a palindrome (71717).

The spelling of 716664551 in words is "seven hundred sixteen million, six hundred sixty-four thousand, five hundred fifty-one".