82774831 has 2 divisors, whose sum is σ = 82774832. Its totient is φ = 82774830.

The previous prime is 82774807. The next prime is 82774841. The reversal of 82774831 is 13847728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82774831 - 2⁹ = 82774319 is a prime.

It is a super-2 number, since 2×82774831² = 13703345294157122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82774801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41387415 + 41387416.

It is an arithmetic number, because the mean of its divisors is an integer number (41387416).

Almost surely, 2^82774831 is an apocalyptic number.

82774831 is a deficient number, since it is larger than the sum of its proper divisors (1).

82774831 is an equidigital number, since it uses as much as digits as its factorization.

82774831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 40.

The square root of 82774831 is about 9098.0674321528. The cubic root of 82774831 is about 435.8122508276.

The spelling of 82774831 in words is "eighty-two million, seven hundred seventy-four thousand, eight hundred thirty-one".