83689956 has 96 divisors (see below), whose sum is σ = 256040960. Its totient is φ = 23133600.

The previous prime is 83689877. The next prime is 83690017. The reversal of 83689956 is 65998638.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21651 + ... + 25221.

Almost surely, 2^83689956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83689956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128020480).

83689956 is an abundant number, since it is smaller than the sum of its proper divisors (172351004).

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

83689956 is a wasteful number, since it uses less digits than its factorization.

83689956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622 (or 3614 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 83689956 is about 9148.2214664928. The cubic root of 83689956 is about 437.4124228512.

The spelling of 83689956 in words is "eighty-three million, six hundred eighty-nine thousand, nine hundred fifty-six".