898731 has 6 divisors (see below), whose sum is σ = 1298180. Its totient is φ = 599148.

The previous prime is 898727. The next prime is 898753. The reversal of 898731 is 137898.

It is not a de Polignac number, because 898731 - 2² = 898727 is a prime.

It is a super-2 number, since 2×898731² = 1615434820722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 898731.

It is not an unprimeable number, because it can be changed into a prime (898231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49921 + ... + 49938.

2⁸⁹⁸⁷³¹ is an apocalyptic number.

898731 is a deficient number, since it is larger than the sum of its proper divisors (399449).

898731 is a wasteful number, since it uses less digits than its factorization.

898731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99865 (or 99862 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 898731 is about 948.0142403994. The cubic root of 898731 is about 96.5035391151.

The spelling of 898731 in words is "eight hundred ninety-eight thousand, seven hundred thirty-one".