689567906682 has 96 divisors (see below), whose sum is σ = 1611115683840. Its totient is φ = 212531726880.

The previous prime is 689567906681. The next prime is 689567906689. The reversal of 689567906682 is 286609765986.

It is a self number, because there is not a number n which added to its sum of digits gives 689567906682.

It is not an unprimeable number, because it can be changed into a prime (689567906681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11610819 + ... + 11670057.

It is an arithmetic number, because the mean of its divisors is an integer number (16782455040).

Almost surely, 2^689567906682 is an apocalyptic number.

689567906682 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 689567906682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805557841920).

689567906682 is an abundant number, since it is smaller than the sum of its proper divisors (921547777158).

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

689567906682 is a wasteful number, since it uses less digits than its factorization.

689567906682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60208 (or 60205 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 72.

The spelling of 689567906682 in words is "six hundred eighty-nine billion, five hundred sixty-seven million, nine hundred six thousand, six hundred eighty-two".