85921860 has 24 divisors (see below), whose sum is σ = 240581376. Its totient is φ = 22912480.

The previous prime is 85921817. The next prime is 85921883. The reversal of 85921860 is 6812958.

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, 715956 + ... + 716075.

It is an arithmetic number, because the mean of its divisors is an integer number (10024224).

Almost surely, 2^85921860 is an apocalyptic number.

It is an amenable number.

85921860 is an abundant number, since it is smaller than the sum of its proper divisors (154659516).

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

85921860 is a wasteful number, since it uses less digits than its factorization.

85921860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432043 (or 1432041 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 85921860 is about 9269.4045116178. The cubic root of 85921860 is about 441.2667695532.

The spelling of 85921860 in words is "eighty-five million, nine hundred twenty-one thousand, eight hundred sixty".