85523660 has 48 divisors (see below), whose sum is σ = 189604800. Its totient is φ = 32338944.

The previous prime is 85523629. The next prime is 85523671. The reversal of 85523660 is 6632558.

It is a self number, because there is not a number n which added to its sum of digits gives 85523660.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39896 + ... + 41984.

It is an arithmetic number, because the mean of its divisors is an integer number (3950100).

Almost surely, 2^85523660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85523660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94802400).

85523660 is an abundant number, since it is smaller than the sum of its proper divisors (104081140).

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

85523660 is a wasteful number, since it uses less digits than its factorization.

85523660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210 (or 2208 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 85523660 is about 9247.9003022308. The cubic root of 85523660 is about 440.5840384772.

The spelling of 85523660 in words is "eighty-five million, five hundred twenty-three thousand, six hundred sixty".