215722713 has 16 divisors (see below), whose sum is σ = 303105600. Its totient is φ = 136094400.

The previous prime is 215722709. The next prime is 215722721. The reversal of 215722713 is 317227512.

It is not a de Polignac number, because 215722713 - 2² = 215722709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215722723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72703 + ... + 75611.

It is an arithmetic number, because the mean of its divisors is an integer number (18944100).

Almost surely, 2^215722713 is an apocalyptic number.

It is an amenable number.

215722713 is a deficient number, since it is larger than the sum of its proper divisors (87382887).

215722713 is a wasteful number, since it uses less digits than its factorization.

215722713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232.

The product of its digits is 5880, while the sum is 30.

The square root of 215722713 is about 14687.5019319148. The cubic root of 215722713 is about 599.7431428341.

The spelling of 215722713 in words is "two hundred fifteen million, seven hundred twenty-two thousand, seven hundred thirteen".