689248726908 has 192 divisors, whose sum is σ = 1904045875200. Its totient is φ = 190000984320.

The previous prime is 689248726883. The next prime is 689248726961. The reversal of 689248726908 is 809627842986.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79871538 + ... + 79880166.

It is an arithmetic number, because the mean of its divisors is an integer number (9916905600).

Almost surely, 2^689248726908 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 689248726908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952022937600).

689248726908 is an abundant number, since it is smaller than the sum of its proper divisors (1214797148292).

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

689248726908 is a wasteful number, since it uses less digits than its factorization.

689248726908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000 (or 8998 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 69.

The spelling of 689248726908 in words is "six hundred eighty-nine billion, two hundred forty-eight million, seven hundred twenty-six thousand, nine hundred eight".