85897512 has 24 divisors (see below), whose sum is σ = 232639290. Its totient is φ = 28632480.

The previous prime is 85897459. The next prime is 85897517. The reversal of 85897512 is 21579858.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 79816356 + 6081156 = 8934^2 + 2466^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (85897517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 596439 + ... + 596582.

Almost surely, 2^85897512 is an apocalyptic number.

It is an amenable number.

85897512 is an abundant number, since it is smaller than the sum of its proper divisors (146741778).

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

85897512 is a wasteful number, since it uses less digits than its factorization.

85897512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193033 (or 1193026 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 85897512 is about 9268.0910655863. The cubic root of 85897512 is about 441.2250844751.

The spelling of 85897512 in words is "eighty-five million, eight hundred ninety-seven thousand, five hundred twelve".