689420916 has 48 divisors (see below), whose sum is σ = 1797768000. Its totient is φ = 228472416.

The previous prime is 689420911. The next prime is 689420917. The reversal of 689420916 is 619024986.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689420911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235 + ... + 37133.

It is an arithmetic number, because the mean of its divisors is an integer number (37453500).

Almost surely, 2^689420916 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 689420916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898884000).

689420916 is an abundant number, since it is smaller than the sum of its proper divisors (1108347084).

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

689420916 is a wasteful number, since it uses less digits than its factorization.

689420916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37085 (or 37077 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 689420916 is about 26256.8260838967. The cubic root of 689420916 is about 883.4083197605.

The spelling of 689420916 in words is "six hundred eighty-nine million, four hundred twenty thousand, nine hundred sixteen".