689510218992 has 160 divisors (see below), whose sum is σ = 2110094945280. Its totient is φ = 189830215680.

The previous prime is 689510218939. The next prime is 689510218997. The reversal of 689510218992 is 299812015986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689510218997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4830892 + ... + 4971572.

It is an arithmetic number, because the mean of its divisors is an integer number (13188093408).

Almost surely, 2^689510218992 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 689510218992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1055047472640).

689510218992 is an abundant number, since it is smaller than the sum of its proper divisors (1420584726288).

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

689510218992 is a wasteful number, since it uses less digits than its factorization.

689510218992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141231 (or 141225 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 60.

The spelling of 689510218992 in words is "six hundred eighty-nine billion, five hundred ten million, two hundred eighteen thousand, nine hundred ninety-two".