698820 has 48 divisors (see below), whose sum is σ = 2063040. Its totient is φ = 176256.

The previous prime is 698779. The next prime is 698821. The reversal of 698820 is 28896.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698820.

It is not an unprimeable number, because it can be changed into a prime (698821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834 + ... + 1446.

It is an arithmetic number, because the mean of its divisors is an integer number (42980).

2⁶⁹⁸⁸²⁰ is an apocalyptic number.

698820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031520).

698820 is an abundant number, since it is smaller than the sum of its proper divisors (1364220).

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

698820 is a wasteful number, since it uses less digits than its factorization.

698820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 698820 is about 835.9545442188. The cubic root of 698820 is about 88.7404803649.

The spelling of 698820 in words is "six hundred ninety-eight thousand, eight hundred twenty".