83686956 has 12 divisors (see below), whose sum is σ = 195269592. Its totient is φ = 27895648.

The previous prime is 83686951. The next prime is 83686961. The reversal of 83686956 is 65968638.

It is an interprime number because it is at equal distance from previous prime (83686951) and next prime (83686961).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 83686899 and 83686908.

It is not an unprimeable number, because it can be changed into a prime (83686951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3486945 + ... + 3486968.

It is an arithmetic number, because the mean of its divisors is an integer number (16272466).

Almost surely, 2^83686956 is an apocalyptic number.

It is an amenable number.

83686956 is an abundant number, since it is smaller than the sum of its proper divisors (111582636).

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

83686956 is a wasteful number, since it uses less digits than its factorization.

83686956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6973920 (or 6973918 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The square root of 83686956 is about 9148.0574987262. The cubic root of 83686956 is about 437.4071962067.

The spelling of 83686956 in words is "eighty-three million, six hundred eighty-six thousand, nine hundred fifty-six".