83975680 has 40 divisors (see below), whose sum is σ = 201350952. Its totient is φ = 33589248.

The previous prime is 83975659. The next prime is 83975701. The reversal of 83975680 is 8657938.

It is an interprime number because it is at equal distance from previous prime (83975659) and next prime (83975701).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 83975680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13842 + ... + 18961.

Almost surely, 2^83975680 is an apocalyptic number.

83975680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83975680 is an abundant number, since it is smaller than the sum of its proper divisors (117375272).

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

83975680 is an equidigital number, since it uses as much as digits as its factorization.

83975680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32826 (or 32810 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 83975680 is about 9163.8245290926. The cubic root of 83975680 is about 437.9096440736.

The spelling of 83975680 in words is "eighty-three million, nine hundred seventy-five thousand, six hundred eighty".