82779707 has 2 divisors, whose sum is σ = 82779708. Its totient is φ = 82779706.

The previous prime is 82779679. The next prime is 82779709. The reversal of 82779707 is 70797728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82779707 - 2¹⁸ = 82517563 is a prime.

Together with 82779709, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82779709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41389853 + 41389854.

It is an arithmetic number, because the mean of its divisors is an integer number (41389854).

Almost surely, 2^82779707 is an apocalyptic number.

82779707 is a deficient number, since it is larger than the sum of its proper divisors (1).

82779707 is an equidigital number, since it uses as much as digits as its factorization.

82779707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345744, while the sum is 47.

The square root of 82779707 is about 9098.3353972032. The cubic root of 82779707 is about 435.8208080938.

The spelling of 82779707 in words is "eighty-two million, seven hundred seventy-nine thousand, seven hundred seven".