85653870 has 16 divisors (see below), whose sum is σ = 205569360. Its totient is φ = 22841024.

The previous prime is 85653859. The next prime is 85653889. The reversal of 85653870 is 7835658.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 1427535 + ... + 1427594.

It is an arithmetic number, because the mean of its divisors is an integer number (12848085).

Almost surely, 2^85653870 is an apocalyptic number.

85653870 is an abundant number, since it is smaller than the sum of its proper divisors (119915490).

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

85653870 is a wasteful number, since it uses less digits than its factorization.

85653870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855139.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 85653870 is about 9254.9376010862. The cubic root of 85653870 is about 440.8075218879.

The spelling of 85653870 in words is "eighty-five million, six hundred fifty-three thousand, eight hundred seventy".