689623747326986 has 8 divisors (see below), whose sum is σ = 1034447871348864. Its totient is φ = 344807790210700.

The previous prime is 689623747326973. The next prime is 689623747327079.

689623747326986 is nontrivially palindromic in base 10.

689623747326986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 689623747326898 and 689623747326907.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2041515290 + ... + 2041853061.

It is an arithmetic number, because the mean of its divisors is an integer number (129305983918608).

Almost surely, 2^{689623747326986} is an apocalyptic number.

689623747326986 is a deficient number, since it is larger than the sum of its proper divisors (344824124021878).

689623747326986 is a wasteful number, since it uses less digits than its factorization.

689623747326986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083452796.

The product of its digits is 47405481984, while the sum is 86.

The spelling of 689623747326986 in words is "six hundred eighty-nine trillion, six hundred twenty-three billion, seven hundred forty-seven million, three hundred twenty-six thousand, nine hundred eighty-six".