82815713 has 2 divisors, whose sum is σ = 82815714. Its totient is φ = 82815712.

The previous prime is 82815701. The next prime is 82815743. The reversal of 82815713 is 31751828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43665664 + 39150049 = 6608^2 + 6257^2 .

It is a cyclic number.

It is not a de Polignac number, because 82815713 - 2⁴ = 82815697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82815743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41407856 + 41407857.

It is an arithmetic number, because the mean of its divisors is an integer number (41407857).

Almost surely, 2^82815713 is an apocalyptic number.

It is an amenable number.

82815713 is a deficient number, since it is larger than the sum of its proper divisors (1).

82815713 is an equidigital number, since it uses as much as digits as its factorization.

82815713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 82815713 is about 9100.3138956851. The cubic root of 82815713 is about 435.8839873841.

The spelling of 82815713 in words is "eighty-two million, eight hundred fifteen thousand, seven hundred thirteen".