898665 has 16 divisors (see below), whose sum is σ = 1450176. Its totient is φ = 475200.

The previous prime is 898663. The next prime is 898669. The reversal of 898665 is 566898.

It is not a de Polignac number, because 898665 - 2¹ = 898663 is a prime.

It is a Curzon number.

898665 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 898665.

It is not an unprimeable number, because it can be changed into a prime (898661) 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, 2550 + ... + 2880.

It is an arithmetic number, because the mean of its divisors is an integer number (90636).

2⁸⁹⁸⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

898665 is a deficient number, since it is larger than the sum of its proper divisors (551511).

898665 is a wasteful number, since it uses less digits than its factorization.

898665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520.

The product of its digits is 103680, while the sum is 42.

The square root of 898665 is about 947.9794301566. The cubic root of 898665 is about 96.5011767510.

The spelling of 898665 in words is "eight hundred ninety-eight thousand, six hundred sixty-five".