83886636 has 96 divisors (see below), whose sum is σ = 216615168. Its totient is φ = 25159680.

The previous prime is 83886631. The next prime is 83886643. The reversal of 83886636 is 63668838.

It is not an unprimeable number, because it can be changed into a prime (83886631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 640291 + ... + 640421.

It is an arithmetic number, because the mean of its divisors is an integer number (2256408).

Almost surely, 2^83886636 is an apocalyptic number.

83886636 is a gapful number since it is divisible by the number (86) 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 83886636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108307584).

83886636 is an abundant number, since it is smaller than the sum of its proper divisors (132728532).

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

83886636 is a wasteful number, since it uses less digits than its factorization.

83886636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 83886636 is about 9158.9647886647. The cubic root of 83886636 is about 437.7548094966.

The spelling of 83886636 in words is "eighty-three million, eight hundred eighty-six thousand, six hundred thirty-six".