82656909 has 8 divisors (see below), whose sum is σ = 122454720. Its totient is φ = 55104588.

The previous prime is 82656887. The next prime is 82656911. The reversal of 82656909 is 90965628.

82656909 is a `hidden beast` number, since 82 + 6 + 569 + 0 + 9 = 666.

It is not a de Polignac number, because 82656909 - 2⁷ = 82656781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82656949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1530657 + ... + 1530710.

It is an arithmetic number, because the mean of its divisors is an integer number (15306840).

Almost surely, 2^82656909 is an apocalyptic number.

It is an amenable number.

82656909 is a deficient number, since it is larger than the sum of its proper divisors (39797811).

82656909 is a wasteful number, since it uses less digits than its factorization.

82656909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061376 (or 3061370 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 82656909 is about 9091.5845153636. The cubic root of 82656909 is about 435.6051980498.

The spelling of 82656909 in words is "eighty-two million, six hundred fifty-six thousand, nine hundred nine".