85660992 has 84 divisors (see below), whose sum is σ = 247676416. Its totient is φ = 28304640.

The previous prime is 85660969. The next prime is 85660997. The reversal of 85660992 is 29906658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85660997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72567 + ... + 73737.

Almost surely, 2^85660992 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 85660992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123838208).

85660992 is an abundant number, since it is smaller than the sum of its proper divisors (162015424).

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

85660992 is a wasteful number, since it uses less digits than its factorization.

85660992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 85660992 is about 9255.3223606744. The cubic root of 85660992 is about 440.8197390598.

The spelling of 85660992 in words is "eighty-five million, six hundred sixty thousand, nine hundred ninety-two".