716121589 has 2 divisors, whose sum is σ = 716121590. Its totient is φ = 716121588.

The previous prime is 716121559. The next prime is 716121641. The reversal of 716121589 is 985121617.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 576480100 + 139641489 = 24010^2 + 11817^2 .

It is a cyclic number.

It is not a de Polignac number, because 716121589 - 2⁵ = 716121557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (716121509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358060794 + 358060795.

It is an arithmetic number, because the mean of its divisors is an integer number (358060795).

Almost surely, 2^716121589 is an apocalyptic number.

It is an amenable number.

716121589 is a deficient number, since it is larger than the sum of its proper divisors (1).

716121589 is an equidigital number, since it uses as much as digits as its factorization.

716121589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 40.

The square root of 716121589 is about 26760.4482212089. The cubic root of 716121589 is about 894.6687241866.

The spelling of 716121589 in words is "seven hundred sixteen million, one hundred twenty-one thousand, five hundred eighty-nine".