83985560 has 32 divisors (see below), whose sum is σ = 194078160. Its totient is φ = 32685696.

The previous prime is 83985557. The next prime is 83985571. The reversal of 83985560 is 6558938.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26894 + ... + 29853.

Almost surely, 2^83985560 is an apocalyptic number.

It is an amenable number.

83985560 is an abundant number, since it is smaller than the sum of its proper divisors (110092600).

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

83985560 is a wasteful number, since it uses less digits than its factorization.

83985560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56795 (or 56791 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 83985560 is about 9164.3635894698. The cubic root of 83985560 is about 437.9268172108.

The spelling of 83985560 in words is "eighty-three million, nine hundred eighty-five thousand, five hundred sixty".