83620957 has 12 divisors (see below), whose sum is σ = 100864416. Its totient is φ = 67900680.

The previous prime is 83620951. The next prime is 83620961. The reversal of 83620957 is 75902638.

It is not a de Polignac number, because 83620957 - 2¹⁵ = 83588189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83620951) 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, 14019 + ... + 19072.

It is an arithmetic number, because the mean of its divisors is an integer number (8405368).

Almost surely, 2^83620957 is an apocalyptic number.

It is an amenable number.

83620957 is a deficient number, since it is larger than the sum of its proper divisors (17243459).

83620957 is a wasteful number, since it uses less digits than its factorization.

83620957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33136 (or 33117 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 83620957 is about 9144.4495186971. The cubic root of 83620957 is about 437.2921801549.

The spelling of 83620957 in words is "eighty-three million, six hundred twenty thousand, nine hundred fifty-seven".