83570 has 16 divisors (see below), whose sum is σ = 154008. Its totient is φ = 32640.

The previous prime is 83563. The next prime is 83579. The reversal of 83570 is 7538.

It can be written as a sum of positive squares in 4 ways, for example, as 47089 + 36481 = 217^2 + 191^2 .

It is not an unprimeable number, because it can be changed into a prime (83579) by changing a digit.

83570 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542 + ... + 678.

2⁸³⁵⁷⁰ is an apocalyptic number.

83570 is a deficient number, since it is larger than the sum of its proper divisors (70438).

83570 is a wasteful number, since it uses less digits than its factorization.

83570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 83570 is about 289.0847626562. The cubic root of 83570 is about 43.7203336296.

The spelling of 83570 in words is "eighty-three thousand, five hundred seventy".