82868413 has 2 divisors, whose sum is σ = 82868414. Its totient is φ = 82868412.

The previous prime is 82868381. The next prime is 82868417. The reversal of 82868413 is 31486828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82410084 + 458329 = 9078^2 + 677^2 .

It is a cyclic number.

It is not a de Polignac number, because 82868413 - 2⁵ = 82868381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82868417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41434206 + 41434207.

It is an arithmetic number, because the mean of its divisors is an integer number (41434207).

Almost surely, 2^82868413 is an apocalyptic number.

It is an amenable number.

82868413 is a deficient number, since it is larger than the sum of its proper divisors (1).

82868413 is an equidigital number, since it uses as much as digits as its factorization.

82868413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73728, while the sum is 40.

The square root of 82868413 is about 9103.2089397091. The cubic root of 82868413 is about 435.9764264251.

The spelling of 82868413 in words is "eighty-two million, eight hundred sixty-eight thousand, four hundred thirteen".