215652713 has 2 divisors, whose sum is σ = 215652714. Its totient is φ = 215652712.

The previous prime is 215652683. The next prime is 215652737. The reversal of 215652713 is 317256512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188320729 + 27331984 = 13723^2 + 5228^2 .

It is a cyclic number.

It is not a de Polignac number, because 215652713 - 2⁶ = 215652649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215652713.

It is not a weakly prime, because it can be changed into another prime (215652013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107826356 + 107826357.

It is an arithmetic number, because the mean of its divisors is an integer number (107826357).

Almost surely, 2^215652713 is an apocalyptic number.

It is an amenable number.

215652713 is a deficient number, since it is larger than the sum of its proper divisors (1).

215652713 is an equidigital number, since it uses as much as digits as its factorization.

215652713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 215652713 is about 14685.1187601599. The cubic root of 215652713 is about 599.6782654720.

The spelling of 215652713 in words is "two hundred fifteen million, six hundred fifty-two thousand, seven hundred thirteen".