83686684 has 12 divisors (see below), whose sum is σ = 146876184. Its totient is φ = 41722064.

The previous prime is 83686657. The next prime is 83686723. The reversal of 83686684 is 48668638.

It is a super-2 number, since 2×83686684² = 14006922157831712, which contains 22 as substring.

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, 28759 + ... + 31534.

It is an arithmetic number, because the mean of its divisors is an integer number (12239682).

Almost surely, 2^83686684 is an apocalyptic number.

It is an amenable number.

83686684 is a deficient number, since it is larger than the sum of its proper divisors (63189500).

83686684 is a wasteful number, since it uses less digits than its factorization.

83686684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60644 (or 60642 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 49.

The square root of 83686684 is about 9148.0426321700. The cubic root of 83686684 is about 437.4067223181.

The spelling of 83686684 in words is "eighty-three million, six hundred eighty-six thousand, six hundred eighty-four".