83620881 has 12 divisors (see below), whose sum is σ = 127143120. Its totient is φ = 52813080.

The previous prime is 83620819. The next prime is 83620883. The reversal of 83620881 is 18802638.

It is not a de Polignac number, because 83620881 - 2⁷ = 83620753 is a prime.

It is a super-2 number, since 2×83620881² = 13984903478432322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (83620883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244335 + ... + 244676.

It is an arithmetic number, because the mean of its divisors is an integer number (10595260).

Almost surely, 2^83620881 is an apocalyptic number.

It is an amenable number.

83620881 is a deficient number, since it is larger than the sum of its proper divisors (43522239).

83620881 is a wasteful number, since it uses less digits than its factorization.

83620881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489036 (or 489033 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 83620881 is about 9144.4453631699. The cubic root of 83620881 is about 437.2920476752.

The spelling of 83620881 in words is "eighty-three million, six hundred twenty thousand, eight hundred eighty-one".