898161 has 16 divisors (see below), whose sum is σ = 1384128. Its totient is φ = 512000.

The previous prime is 898153. The next prime is 898171. The reversal of 898161 is 161898.

It is a 3-Lehmer number, since φ(898161) divides (898161-1)³.

It is a cyclic number.

It is not a de Polignac number, because 898161 - 2³ = 898153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898171) 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, 240 + ... + 1361.

It is an arithmetic number, because the mean of its divisors is an integer number (86508).

2⁸⁹⁸¹⁶¹ is an apocalyptic number.

It is an amenable number.

898161 is a deficient number, since it is larger than the sum of its proper divisors (485967).

898161 is a wasteful number, since it uses less digits than its factorization.

898161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632.

The product of its digits is 3456, while the sum is 33.

The square root of 898161 is about 947.7135643220. The cubic root of 898161 is about 96.4831330647.

The spelling of 898161 in words is "eight hundred ninety-eight thousand, one hundred sixty-one".