83670975 has 42 divisors (see below), whose sum is σ = 155590736. Its totient is φ = 44614800.

The previous prime is 83670929. The next prime is 83671009. The reversal of 83670975 is 57907638.

It is a happy number.

It is not a de Polignac number, because 83670975 - 2¹⁰ = 83669951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83670975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 15930 + ... + 20520.

Almost surely, 2^83670975 is an apocalyptic number.

83670975 is a deficient number, since it is larger than the sum of its proper divisors (71919761).

83670975 is an equidigital number, since it uses as much as digits as its factorization.

83670975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4619 (or 4599 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 83670975 is about 9147.1839929019. The cubic root of 83670975 is about 437.3793517662.

The spelling of 83670975 in words is "eighty-three million, six hundred seventy thousand, nine hundred seventy-five".