689457916 has 48 divisors (see below), whose sum is σ = 1474587072. Its totient is φ = 275328000.

The previous prime is 689457871. The next prime is 689457941. The reversal of 689457916 is 619754986.

It is a congruent number.

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, 40906 + ... + 55246.

It is an arithmetic number, because the mean of its divisors is an integer number (30720564).

Almost surely, 2^689457916 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 689457916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737293536).

689457916 is an abundant number, since it is smaller than the sum of its proper divisors (785129156).

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

689457916 is a wasteful number, since it uses less digits than its factorization.

689457916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14470 (or 14468 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 55.

The square root of 689457916 is about 26257.5306531288. The cubic root of 689457916 is about 883.4241231313.

The spelling of 689457916 in words is "six hundred eighty-nine million, four hundred fifty-seven thousand, nine hundred sixteen".