83820806 has 4 divisors (see below), whose sum is σ = 125731212. Its totient is φ = 41910402.

The previous prime is 83820773. The next prime is 83820811. The reversal of 83820806 is 60802838.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 20955200 + ... + 20955203.

It is an arithmetic number, because the mean of its divisors is an integer number (31432803).

Almost surely, 2^83820806 is an apocalyptic number.

83820806 is a deficient number, since it is larger than the sum of its proper divisors (41910406).

83820806 is a wasteful number, since it uses less digits than its factorization.

83820806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41910405.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 83820806 is about 9155.3703365839. The cubic root of 83820806 is about 437.6402702330.

The spelling of 83820806 in words is "eighty-three million, eight hundred twenty thousand, eight hundred six".