82716779 has 2 divisors, whose sum is σ = 82716780. Its totient is φ = 82716778.

The previous prime is 82716737. The next prime is 82716827. The reversal of 82716779 is 97761728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82716779 - 2¹² = 82712683 is a prime.

It is not a weakly prime, because it can be changed into another prime (82716479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41358389 + 41358390.

It is an arithmetic number, because the mean of its divisors is an integer number (41358390).

Almost surely, 2^82716779 is an apocalyptic number.

82716779 is a deficient number, since it is larger than the sum of its proper divisors (1).

82716779 is an equidigital number, since it uses as much as digits as its factorization.

82716779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 47.

The square root of 82716779 is about 9094.8765247253. The cubic root of 82716779 is about 435.7103450943.

The spelling of 82716779 in words is "eighty-two million, seven hundred sixteen thousand, seven hundred seventy-nine".