82668659 has 2 divisors, whose sum is σ = 82668660. Its totient is φ = 82668658.

The previous prime is 82668643. The next prime is 82668683. The reversal of 82668659 is 95686628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82668659 - 2⁴ = 82668643 is a prime.

It is not a weakly prime, because it can be changed into another prime (82668689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41334329 + 41334330.

It is an arithmetic number, because the mean of its divisors is an integer number (41334330).

Almost surely, 2^82668659 is an apocalyptic number.

82668659 is a deficient number, since it is larger than the sum of its proper divisors (1).

82668659 is an equidigital number, since it uses as much as digits as its factorization.

82668659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 50.

The square root of 82668659 is about 9092.2306943896. The cubic root of 82668659 is about 435.6258380609.

The spelling of 82668659 in words is "eighty-two million, six hundred sixty-eight thousand, six hundred fifty-nine".