82684879 has 2 divisors, whose sum is σ = 82684880. Its totient is φ = 82684878.

The previous prime is 82684871. The next prime is 82684883. The reversal of 82684879 is 97848628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82684879 - 2³ = 82684871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82684871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41342439 + 41342440.

It is an arithmetic number, because the mean of its divisors is an integer number (41342440).

Almost surely, 2^82684879 is an apocalyptic number.

82684879 is a deficient number, since it is larger than the sum of its proper divisors (1).

82684879 is an equidigital number, since it uses as much as digits as its factorization.

82684879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 52.

The square root of 82684879 is about 9093.1226209702. The cubic root of 82684879 is about 435.6543268462.

The spelling of 82684879 in words is "eighty-two million, six hundred eighty-four thousand, eight hundred seventy-nine".