83986864 has 20 divisors (see below), whose sum is σ = 175242256. Its totient is φ = 38763072.

The previous prime is 83986841. The next prime is 83986867. The reversal of 83986864 is 46868938.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (83986867) 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, 201684 + ... + 202099.

Almost surely, 2^83986864 is an apocalyptic number.

It is an amenable number.

83986864 is an abundant number, since it is smaller than the sum of its proper divisors (91255392).

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

83986864 is a wasteful number, since it uses less digits than its factorization.

83986864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403804 (or 403798 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The square root of 83986864 is about 9164.4347343412. The cubic root of 83986864 is about 437.9290836862.

The spelling of 83986864 in words is "eighty-three million, nine hundred eighty-six thousand, eight hundred sixty-four".