698220 has 60 divisors (see below), whose sum is σ = 2195424. Its totient is φ = 185760.

The previous prime is 698183. The next prime is 698239. The reversal of 698220 is 22896.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×698220² = 975022336800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698220.

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 19 ways as a sum of consecutive naturals, for example, 1405 + ... + 1835.

698220 is a Friedman number, since it can be written as 8620*9^2, using all its digits and the basic arithmetic operations.

2⁶⁹⁸²²⁰ is an apocalyptic number.

698220 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 698220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1097712).

698220 is an abundant number, since it is smaller than the sum of its proper divisors (1497204).

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

698220 is a wasteful number, since it uses less digits than its factorization.

698220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 698220 is about 835.5955959673. The cubic root of 698220 is about 88.7150758574.

The spelling of 698220 in words is "six hundred ninety-eight thousand, two hundred twenty".