82768979 has 2 divisors, whose sum is σ = 82768980. Its totient is φ = 82768978.

The previous prime is 82768951. The next prime is 82768991. The reversal of 82768979 is 97986728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82768979 - 2²⁴ = 65991763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82768949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41384489 + 41384490.

It is an arithmetic number, because the mean of its divisors is an integer number (41384490).

Almost surely, 2^82768979 is an apocalyptic number.

82768979 is a deficient number, since it is larger than the sum of its proper divisors (1).

82768979 is an equidigital number, since it uses as much as digits as its factorization.

82768979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 56.

The square root of 82768979 is about 9097.7458197072. The cubic root of 82768979 is about 435.8019802603.

The spelling of 82768979 in words is "eighty-two million, seven hundred sixty-eight thousand, nine hundred seventy-nine".