689348528 has 80 divisors (see below), whose sum is σ = 1508046336. Its totient is φ = 302565120.

The previous prime is 689348509. The next prime is 689348551. The reversal of 689348528 is 825843986.

689348528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a self number, because there is not a number n which added to its sum of digits gives 689348528.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624425 + ... + 625527.

Almost surely, 2^689348528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689348528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754023168).

689348528 is an abundant number, since it is smaller than the sum of its proper divisors (818697808).

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

689348528 is a wasteful number, since it uses less digits than its factorization.

689348528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1236 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 53.

The square root of 689348528 is about 26255.4475871199. The cubic root of 689348528 is about 883.3773998981.

The spelling of 689348528 in words is "six hundred eighty-nine million, three hundred forty-eight thousand, five hundred twenty-eight".