689605986080 has 192 divisors, whose sum is σ = 1858275820800. Its totient is φ = 239384555520.

The previous prime is 689605986079. The next prime is 689605986101. The reversal of 689605986080 is 80689506986.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 689605985998 and 689605986016.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20587586 + ... + 20621054.

It is an arithmetic number, because the mean of its divisors is an integer number (9678519900).

Almost surely, 2^689605986080 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 689605986080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929137910400).

689605986080 is an abundant number, since it is smaller than the sum of its proper divisors (1168669834720).

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

689605986080 is a wasteful number, since it uses less digits than its factorization.

689605986080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34027 (or 34019 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 65.

The spelling of 689605986080 in words is "six hundred eighty-nine billion, six hundred five million, nine hundred eighty-six thousand, eighty".