85705560 has 64 divisors (see below), whose sum is σ = 285688800. Its totient is φ = 22854528.

The previous prime is 85705547. The next prime is 85705603. The reversal of 85705560 is 6550758.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38599 + ... + 40758.

Almost surely, 2^85705560 is an apocalyptic number.

It is an amenable number.

85705560 is an abundant number, since it is smaller than the sum of its proper divisors (199983240).

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

85705560 is a wasteful number, since it uses less digits than its factorization.

85705560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79377 (or 79367 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 85705560 is about 9257.7297433010. The cubic root of 85705560 is about 440.8961762160.

The spelling of 85705560 in words is "eighty-five million, seven hundred five thousand, five hundred sixty".