716674921 has 2 divisors, whose sum is σ = 716674922. Its totient is φ = 716674920.

The previous prime is 716674919. The next prime is 716674939. The reversal of 716674921 is 129476617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592240896 + 124434025 = 24336^2 + 11155^2 .

It is a cyclic number.

It is not a de Polignac number, because 716674921 - 2¹ = 716674919 is a prime.

Together with 716674919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (716674961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358337460 + 358337461.

It is an arithmetic number, because the mean of its divisors is an integer number (358337461).

Almost surely, 2^716674921 is an apocalyptic number.

It is an amenable number.

716674921 is a deficient number, since it is larger than the sum of its proper divisors (1).

716674921 is an equidigital number, since it uses as much as digits as its factorization.

716674921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 716674921 is about 26770.7848409418. The cubic root of 716674921 is about 894.8990953936.

The spelling of 716674921 in words is "seven hundred sixteen million, six hundred seventy-four thousand, nine hundred twenty-one".