698838 has 24 divisors (see below), whose sum is σ = 1626552. Its totient is φ = 199584.

The previous prime is 698827. The next prime is 698849. The reversal of 698838 is 838896.

It is an interprime number because it is at equal distance from previous prime (698827) and next prime (698849).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 698838.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 895 + ... + 1482.

It is an arithmetic number, because the mean of its divisors is an integer number (67773).

2⁶⁹⁸⁸³⁸ is an apocalyptic number.

698838 is an abundant number, since it is smaller than the sum of its proper divisors (927714).

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

698838 is a wasteful number, since it uses less digits than its factorization.

698838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396 (or 2389 counting only the distinct ones).

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

The square root of 698838 is about 835.9653102851. The cubic root of 698838 is about 88.7412422754.

The spelling of 698838 in words is "six hundred ninety-eight thousand, eight hundred thirty-eight".