85011660 has 48 divisors (see below), whose sum is σ = 264482400. Its totient is φ = 22669632.

The previous prime is 85011649. The next prime is 85011683. The reversal of 85011660 is 6611058.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78175 + ... + 79254.

It is an arithmetic number, because the mean of its divisors is an integer number (5510050).

Almost surely, 2^85011660 is an apocalyptic number.

It is an amenable number.

85011660 is an abundant number, since it is smaller than the sum of its proper divisors (179470740).

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

85011660 is a wasteful number, since it uses less digits than its factorization.

85011660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157447 (or 157439 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 85011660 is about 9220.1767878930. The cubic root of 85011660 is about 439.7030710158.

The spelling of 85011660 in words is "eighty-five million, eleven thousand, six hundred sixty".