82906681 has 16 divisors (see below), whose sum is σ = 99247680. Its totient is φ = 68253120.

The previous prime is 82906673. The next prime is 82906699. The reversal of 82906681 is 18660928.

It is not a de Polignac number, because 82906681 - 2³ = 82906673 is a prime.

It is a super-2 number, since 2×82906681² = 13747035508871522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82906601) 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 in 15 ways as a sum of consecutive naturals, for example, 2110 + ... + 13048.

It is an arithmetic number, because the mean of its divisors is an integer number (6202980).

Almost surely, 2^82906681 is an apocalyptic number.

It is an amenable number.

82906681 is a deficient number, since it is larger than the sum of its proper divisors (16340999).

82906681 is a wasteful number, since it uses less digits than its factorization.

82906681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11016.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 82906681 is about 9105.3105932747. The cubic root of 82906681 is about 436.0435262917.

The spelling of 82906681 in words is "eighty-two million, nine hundred six thousand, six hundred eighty-one".