898865 has 16 divisors (see below), whose sum is σ = 1200960. Its totient is φ = 640320.

The previous prime is 898853. The next prime is 898867. The reversal of 898865 is 568898.

It is not a de Polignac number, because 898865 - 2¹⁴ = 882481 is a prime.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 898865.

It is not an unprimeable number, because it can be changed into a prime (898867) 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, 3107 + ... + 3383.

It is an arithmetic number, because the mean of its divisors is an integer number (75060).

2⁸⁹⁸⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

898865 is a deficient number, since it is larger than the sum of its proper divisors (302095).

898865 is a wasteful number, since it uses less digits than its factorization.

898865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its digits is 138240, while the sum is 44.

The square root of 898865 is about 948.0849118091. The cubic root of 898865 is about 96.5083350743.

The spelling of 898865 in words is "eight hundred ninety-eight thousand, eight hundred sixty-five".