85897490 has 64 divisors (see below), whose sum is σ = 183168000. Its totient is φ = 28986048.

The previous prime is 85897459. The next prime is 85897517. The reversal of 85897490 is 9479858.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270812 + ... + 271128.

It is an arithmetic number, because the mean of its divisors is an integer number (2862000).

Almost surely, 2^85897490 is an apocalyptic number.

85897490 is an abundant number, since it is smaller than the sum of its proper divisors (97270510).

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

85897490 is a wasteful number, since it uses less digits than its factorization.

85897490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 85897490 is about 9268.0898787183. The cubic root of 85897490 is about 441.2250468064.

The spelling of 85897490 in words is "eighty-five million, eight hundred ninety-seven thousand, four hundred ninety".