898638 has 32 divisors (see below), whose sum is σ = 1989792. Its totient is φ = 268800.

The previous prime is 898621. The next prime is 898661. The reversal of 898638 is 836898.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 898638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3058 + ... + 3338.

It is an arithmetic number, because the mean of its divisors is an integer number (62181).

2⁸⁹⁸⁶³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 898638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994896).

898638 is an abundant number, since it is smaller than the sum of its proper divisors (1091154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

898638 is a wasteful number, since it uses less digits than its factorization.

898638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340.

The product of its digits is 82944, while the sum is 42.

The square root of 898638 is about 947.9651892343. The cubic root of 898638 is about 96.5002102960.

The spelling of 898638 in words is "eight hundred ninety-eight thousand, six hundred thirty-eight".