83920806 has 64 divisors (see below), whose sum is σ = 199454400. Its totient is φ = 26062848.

The previous prime is 83920769. The next prime is 83920829. The reversal of 83920806 is 60802938.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103330 + ... + 104138.

It is an arithmetic number, because the mean of its divisors is an integer number (3116475).

Almost surely, 2^83920806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83920806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99727200).

83920806 is an abundant number, since it is smaller than the sum of its proper divisors (115533594).

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

83920806 is a wasteful number, since it uses less digits than its factorization.

83920806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 83920806 is about 9160.8299842318. The cubic root of 83920806 is about 437.8142391111.

The spelling of 83920806 in words is "eighty-three million, nine hundred twenty thousand, eight hundred six".