713761621 has 2 divisors, whose sum is σ = 713761622. Its totient is φ = 713761620.

The previous prime is 713761613. The next prime is 713761663. The reversal of 713761621 is 126167317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 451775025 + 261986596 = 21255^2 + 16186^2 .

It is a cyclic number.

It is not a de Polignac number, because 713761621 - 2³ = 713761613 is a prime.

It is a super-2 number, since 2×713761621² = 1018911303225095282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (713741621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356880810 + 356880811.

It is an arithmetic number, because the mean of its divisors is an integer number (356880811).

Almost surely, 2^713761621 is an apocalyptic number.

It is an amenable number.

713761621 is a deficient number, since it is larger than the sum of its proper divisors (1).

713761621 is an equidigital number, since it uses as much as digits as its factorization.

713761621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 34.

The square root of 713761621 is about 26716.3175044765. The cubic root of 713761621 is about 893.6848534777.

The spelling of 713761621 in words is "seven hundred thirteen million, seven hundred sixty-one thousand, six hundred twenty-one".