85570 has 16 divisors (see below), whose sum is σ = 158400. Its totient is φ = 33264.

The previous prime is 85549. The next prime is 85571. The reversal of 85570 is 7558.

It is not an unprimeable number, because it can be changed into a prime (85571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331 + ... + 529.

It is an arithmetic number, because the mean of its divisors is an integer number (9900).

2⁸⁵⁵⁷⁰ is an apocalyptic number.

85570 is a deficient number, since it is larger than the sum of its proper divisors (72830).

85570 is a wasteful number, since it uses less digits than its factorization.

85570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 85570 is about 292.5235033292. The cubic root of 85570 is about 44.0663599221.

The spelling of 85570 in words is "eighty-five thousand, five hundred seventy".