689145994219 has 8 divisors (see below), whose sum is σ = 725509016640. Its totient is φ = 652792189896.

The previous prime is 689145994213. The next prime is 689145994253. The reversal of 689145994219 is 912499541986.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 689145994219 - 2³³ = 680556059627 is a prime.

It is a super-2 number, since 2×689145994219² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689145994213) 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, 2150797 + ... + 2450350.

It is an arithmetic number, because the mean of its divisors is an integer number (90688627080).

Almost surely, 2^689145994219 is an apocalyptic number.

689145994219 is a deficient number, since it is larger than the sum of its proper divisors (36363022421).

689145994219 is a wasteful number, since it uses less digits than its factorization.

689145994219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609049.

The product of its digits is 50388480, while the sum is 67.

The spelling of 689145994219 in words is "six hundred eighty-nine billion, one hundred forty-five million, nine hundred ninety-four thousand, two hundred nineteen".