82879686 has 20 divisors (see below), whose sum is σ = 185712252. Its totient is φ = 27626508.

The previous prime is 82879681. The next prime is 82879697. The reversal of 82879686 is 68697828.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82879681) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 255640 + ... + 255963.

Almost surely, 2^82879686 is an apocalyptic number.

82879686 is an abundant number, since it is smaller than the sum of its proper divisors (102832566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82879686 is a wasteful number, since it uses less digits than its factorization.

82879686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511617 (or 511608 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 82879686 is about 9103.8280959166. The cubic root of 82879686 is about 435.9961948718.

The spelling of 82879686 in words is "eighty-two million, eight hundred seventy-nine thousand, six hundred eighty-six".