82879631 has 2 divisors, whose sum is σ = 82879632. Its totient is φ = 82879630.

The previous prime is 82879627. The next prime is 82879633. The reversal of 82879631 is 13697828.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82879631 - 2² = 82879627 is a prime.

It is a super-2 number, since 2×82879631² = 13738066469392322, which contains 22 as substring.

Together with 82879633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82879633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41439815 + 41439816.

It is an arithmetic number, because the mean of its divisors is an integer number (41439816).

Almost surely, 2^82879631 is an apocalyptic number.

82879631 is a deficient number, since it is larger than the sum of its proper divisors (1).

82879631 is an equidigital number, since it uses as much as digits as its factorization.

82879631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 82879631 is about 9103.8250752088. The cubic root of 82879631 is about 435.9960984276.

The spelling of 82879631 in words is "eighty-two million, eight hundred seventy-nine thousand, six hundred thirty-one".