689292856616 has 128 divisors (see below), whose sum is σ = 1610312417280. Its totient is φ = 269340132096.

The previous prime is 689292856589. The next prime is 689292856639. The reversal of 689292856616 is 616658292986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20971091 + ... + 21003933.

It is an arithmetic number, because the mean of its divisors is an integer number (12580565760).

Almost surely, 2^689292856616 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 689292856616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805156208640).

689292856616 is an abundant number, since it is smaller than the sum of its proper divisors (921019560664).

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

689292856616 is a wasteful number, since it uses less digits than its factorization.

689292856616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33223 (or 33219 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 68.

The spelling of 689292856616 in words is "six hundred eighty-nine billion, two hundred ninety-two million, eight hundred fifty-six thousand, six hundred sixteen".