713073521 has 2 divisors, whose sum is σ = 713073522. Its totient is φ = 713073520.

The previous prime is 713073503. The next prime is 713073523. The reversal of 713073521 is 125370317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409617121 + 303456400 = 20239^2 + 17420^2 .

It is a cyclic number.

It is not a de Polignac number, because 713073521 - 2⁶ = 713073457 is a prime.

It is a Sophie Germain prime.

Together with 713073523, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (713073523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356536760 + 356536761.

It is an arithmetic number, because the mean of its divisors is an integer number (356536761).

Almost surely, 2^713073521 is an apocalyptic number.

It is an amenable number.

713073521 is a deficient number, since it is larger than the sum of its proper divisors (1).

713073521 is an equidigital number, since it uses as much as digits as its factorization.

713073521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 713073521 is about 26703.4365016939. The cubic root of 713073521 is about 893.3975763031.

The spelling of 713073521 in words is "seven hundred thirteen million, seventy-three thousand, five hundred twenty-one".