215669713 has 8 divisors (see below), whose sum is σ = 246688832. Its totient is φ = 184702896.

The previous prime is 215669711. The next prime is 215669737. The reversal of 215669713 is 317966512.

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

It is not a de Polignac number, because 215669713 - 2¹ = 215669711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215669711) 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 7 ways as a sum of consecutive naturals, for example, 3795 + ... + 21112.

It is an arithmetic number, because the mean of its divisors is an integer number (30836104).

Almost surely, 2^215669713 is an apocalyptic number.

It is an amenable number.

215669713 is a deficient number, since it is larger than the sum of its proper divisors (31019119).

215669713 is a wasteful number, since it uses less digits than its factorization.

215669713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26151.

The product of its digits is 68040, while the sum is 40.

The square root of 215669713 is about 14685.6975659994. The cubic root of 215669713 is about 599.6940226934.

The spelling of 215669713 in words is "two hundred fifteen million, six hundred sixty-nine thousand, seven hundred thirteen".