898785 has 12 divisors (see below), whose sum is σ = 1557972. Its totient is φ = 479328.

The previous prime is 898769. The next prime is 898787. The reversal of 898785 is 587898.

It can be written as a sum of positive squares in 2 ways, for example, as 331776 + 567009 = 576^2 + 753^2 .

It is not a de Polignac number, because 898785 - 2⁴ = 898769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 19973 = 898785 / (8 + 9 + 8 + 7 + 8 + 5).

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

It is a self number, because there is not a number n which added to its sum of digits gives 898785.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 898785.

It is not an unprimeable number, because it can be changed into a prime (898787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9942 + ... + 10031.

It is an arithmetic number, because the mean of its divisors is an integer number (129831).

2⁸⁹⁸⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

898785 is a deficient number, since it is larger than the sum of its proper divisors (659187).

898785 is a wasteful number, since it uses less digits than its factorization.

898785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19984 (or 19981 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 898785 is about 948.0427205564. The cubic root of 898785 is about 96.5054718724.

Subtracting from 898785 its product of digits (161280), we obtain a triangular number (737505 = T₁₂₁₄).

The spelling of 898785 in words is "eight hundred ninety-eight thousand, seven hundred eighty-five".