85998992 has 20 divisors (see below), whose sum is σ = 167591580. Its totient is φ = 42749568.

The previous prime is 85998973. The next prime is 85999021. The reversal of 85998992 is 29989958.

It can be written as a sum of positive squares in 2 ways, for example, as 65351056 + 20647936 = 8084^2 + 4544^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12767 + ... + 18302.

It is an arithmetic number, because the mean of its divisors is an integer number (8379579).

Almost surely, 2^85998992 is an apocalyptic number.

It is an amenable number.

85998992 is a deficient number, since it is larger than the sum of its proper divisors (81592588).

85998992 is a wasteful number, since it uses less digits than its factorization.

85998992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31250 (or 31244 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 59.

The square root of 85998992 is about 9273.5641476188. The cubic root of 85998992 is about 441.3987716960.

The spelling of 85998992 in words is "eighty-five million, nine hundred ninety-eight thousand, nine hundred ninety-two".