83686940 has 12 divisors (see below), whose sum is σ = 175742616. Its totient is φ = 33474768.

The previous prime is 83686927. The next prime is 83686951. The reversal of 83686940 is 4968638.

It is a junction number, because it is equal to n+sod(n) for n = 83686891 and 83686900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2092154 + ... + 2092193.

It is an arithmetic number, because the mean of its divisors is an integer number (14645218).

Almost surely, 2^83686940 is an apocalyptic number.

It is an amenable number.

83686940 is an abundant number, since it is smaller than the sum of its proper divisors (92055676).

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

83686940 is a wasteful number, since it uses less digits than its factorization.

83686940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184356 (or 4184354 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 83686940 is about 9148.0566242235. The cubic root of 83686940 is about 437.4071683310.

The spelling of 83686940 in words is "eighty-three million, six hundred eighty-six thousand, nine hundred forty".