897985 has 16 divisors (see below), whose sum is σ = 1218240. Its totient is φ = 629440.

The previous prime is 897983. The next prime is 898013. The reversal of 897985 is 589798.

It is not a de Polignac number, because 897985 - 2¹ = 897983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (897983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314 + ... + 1876.

It is an arithmetic number, because the mean of its divisors is an integer number (76140).

2⁸⁹⁷⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

897985 is a deficient number, since it is larger than the sum of its proper divisors (320255).

897985 is a wasteful number, since it uses less digits than its factorization.

897985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its digits is 181440, while the sum is 46.

The square root of 897985 is about 947.6207047126. The cubic root of 897985 is about 96.4768305047.

The spelling of 897985 in words is "eight hundred ninety-seven thousand, nine hundred eighty-five".