82668713 has 2 divisors, whose sum is σ = 82668714. Its totient is φ = 82668712.

The previous prime is 82668697. The next prime is 82668743. The reversal of 82668713 is 31786628.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44129449 + 38539264 = 6643^2 + 6208^2 .

It is a cyclic number.

It is not a de Polignac number, because 82668713 - 2⁴ = 82668697 is a prime.

It is a super-2 number, since 2×82668713² = 13668232218152738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82668743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41334356 + 41334357.

It is an arithmetic number, because the mean of its divisors is an integer number (41334357).

Almost surely, 2^82668713 is an apocalyptic number.

It is an amenable number.

82668713 is a deficient number, since it is larger than the sum of its proper divisors (1).

82668713 is an equidigital number, since it uses as much as digits as its factorization.

82668713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 82668713 is about 9092.2336639574. The cubic root of 82668713 is about 435.6259329127.

The spelling of 82668713 in words is "eighty-two million, six hundred sixty-eight thousand, seven hundred thirteen".