689614520 has 128 divisors (see below), whose sum is σ = 1959552000. Its totient is φ = 212822016.

The previous prime is 689614487. The next prime is 689614529. The reversal of 689614520 is 25416986.

It is a happy number.

689614520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689614529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106331 + ... + 112629.

It is an arithmetic number, because the mean of its divisors is an integer number (15309000).

Almost surely, 2^689614520 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 689614520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (979776000).

689614520 is an abundant number, since it is smaller than the sum of its proper divisors (1269937480).

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

689614520 is a wasteful number, since it uses less digits than its factorization.

689614520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357 (or 6353 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 689614520 is about 26260.5125616390. The cubic root of 689614520 is about 883.4910052787.

The spelling of 689614520 in words is "six hundred eighty-nine million, six hundred fourteen thousand, five hundred twenty".