713531721 has 8 divisors (see below), whose sum is σ = 1087286464. Its totient is φ = 407732400.

The previous prime is 713531699. The next prime is 713531729. The reversal of 713531721 is 127135317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 713531721 - 2¹⁵ = 713498953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (713531729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16988830 + ... + 16988871.

It is an arithmetic number, because the mean of its divisors is an integer number (135910808).

Almost surely, 2^713531721 is an apocalyptic number.

It is an amenable number.

713531721 is a deficient number, since it is larger than the sum of its proper divisors (373754743).

713531721 is a wasteful number, since it uses less digits than its factorization.

713531721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33977711.

The product of its digits is 4410, while the sum is 30.

The square root of 713531721 is about 26712.0145440212. The cubic root of 713531721 is about 893.5888923029.

The spelling of 713531721 in words is "seven hundred thirteen million, five hundred thirty-one thousand, seven hundred twenty-one".