689000869679861 has 8 divisors (see below), whose sum is σ = 689112494020224. Its totient is φ = 688889253162960.

The previous prime is 689000869679851. The next prime is 689000869679873. The reversal of 689000869679861 is 168976968000986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-689000869679861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 689000869679861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689000869679851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175497416 + ... + 179380446.

It is an arithmetic number, because the mean of its divisors is an integer number (86139061752528).

Almost surely, 2^{689000869679861} is an apocalyptic number.

It is an amenable number.

689000869679861 is a deficient number, since it is larger than the sum of its proper divisors (111624340363).

689000869679861 is a wasteful number, since it uses less digits than its factorization.

689000869679861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911731.

The product of its (nonzero) digits is 3386105856, while the sum is 83.

The spelling of 689000869679861 in words is "six hundred eighty-nine trillion, eight hundred sixty-nine million, six hundred seventy-nine thousand, eight hundred sixty-one".