713615721 has 16 divisors (see below), whose sum is σ = 1171062144. Its totient is φ = 376412544.

The previous prime is 713615677. The next prime is 713615723. The reversal of 713615721 is 127516317.

It is not a de Polignac number, because 713615721 - 2¹⁰ = 713614697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (713615723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1306716 + ... + 1307261.

It is an arithmetic number, because the mean of its divisors is an integer number (73191384).

Almost surely, 2^713615721 is an apocalyptic number.

It is an amenable number.

713615721 is a deficient number, since it is larger than the sum of its proper divisors (457446423).

713615721 is a wasteful number, since it uses less digits than its factorization.

713615721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614000.

The product of its digits is 8820, while the sum is 33.

The square root of 713615721 is about 26713.5868239366. The cubic root of 713615721 is about 893.6239566266.

The spelling of 713615721 in words is "seven hundred thirteen million, six hundred fifteen thousand, seven hundred twenty-one".