85997000 has 64 divisors (see below), whose sum is σ = 210038400. Its totient is φ = 32894400.

The previous prime is 85996997. The next prime is 85997003. The reversal of 85997000 is 79958.

It is an interprime number because it is at equal distance from previous prime (85996997) and next prime (85997003).

It is not an unprimeable number, because it can be changed into a prime (85997003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21131 + ... + 24869.

It is an arithmetic number, because the mean of its divisors is an integer number (3281850).

Almost surely, 2^85997000 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 85997000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105019200).

85997000 is an abundant number, since it is smaller than the sum of its proper divisors (124041400).

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

85997000 is a wasteful number, since it uses less digits than its factorization.

85997000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783 (or 3769 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 85997000 is about 9273.4567449253. The cubic root of 85997000 is about 441.3953636206.

The spelling of 85997000 in words is "eighty-five million, nine hundred ninety-seven thousand".