689876220 has 96 divisors (see below), whose sum is σ = 2138846976. Its totient is φ = 164736000.

The previous prime is 689876197. The next prime is 689876233. The reversal of 689876220 is 22678986.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 689876220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36420 + ... + 52020.

It is an arithmetic number, because the mean of its divisors is an integer number (22279656).

Almost surely, 2^689876220 is an apocalyptic number.

689876220 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 689876220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069423488).

689876220 is an abundant number, since it is smaller than the sum of its proper divisors (1448970756).

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

689876220 is a wasteful number, since it uses less digits than its factorization.

689876220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15691 (or 15689 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 689876220 is about 26265.4948554182. The cubic root of 689876220 is about 883.6027490373.

It can be divided in two parts, 689876 and 220, that added together give a palindrome (690096).

The spelling of 689876220 in words is "six hundred eighty-nine million, eight hundred seventy-six thousand, two hundred twenty".