83936688 has 80 divisors (see below), whose sum is σ = 242115456. Its totient is φ = 24837120.

The previous prime is 83936681. The next prime is 83936707. The reversal of 83936688 is 88663938.

It is a self number, because there is not a number n which added to its sum of digits gives 83936688.

It is not an unprimeable number, because it can be changed into a prime (83936681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20856 + ... + 24552.

Almost surely, 2^83936688 is an apocalyptic number.

83936688 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83936688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121057728).

83936688 is an abundant number, since it is smaller than the sum of its proper divisors (158178768).

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

83936688 is a wasteful number, since it uses less digits than its factorization.

83936688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762 (or 3756 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 83936688 is about 9161.6967860763. The cubic root of 83936688 is about 437.8418561288.

The spelling of 83936688 in words is "eighty-three million, nine hundred thirty-six thousand, six hundred eighty-eight".