689882624 has 80 divisors (see below), whose sum is σ = 1443657600. Its totient is φ = 328925184.

The previous prime is 689882603. The next prime is 689882629. The reversal of 689882624 is 426288986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689882629) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1440017 + ... + 1440495.

It is an arithmetic number, because the mean of its divisors is an integer number (18045720).

Almost surely, 2^689882624 is an apocalyptic number.

689882624 is a gapful number since it is divisible by the number (64) 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 689882624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (721828800).

689882624 is an abundant number, since it is smaller than the sum of its proper divisors (753774976).

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

689882624 is an equidigital number, since it uses as much as digits as its factorization.

689882624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 607 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 53.

The square root of 689882624 is about 26265.6167641272. The cubic root of 689882624 is about 883.6054831386.

The spelling of 689882624 in words is "six hundred eighty-nine million, eight hundred eighty-two thousand, six hundred twenty-four".