689884866274 has 12 divisors (see below), whose sum is σ = 1099280211714. Its totient is φ = 324651701504.

The previous prime is 689884866241. The next prime is 689884866289. The reversal of 689884866274 is 472668488986.

It can be written as a sum of positive squares in 3 ways, for example, as 590120485249 + 99764381025 = 768193^2 + 315855^2 .

It is a super-2 number, since 2×689884866274² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689884866274.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 596785639 + ... + 596786794.

Almost surely, 2^689884866274 is an apocalyptic number.

689884866274 is a deficient number, since it is larger than the sum of its proper divisors (409395345440).

689884866274 is a wasteful number, since it uses less digits than its factorization.

689884866274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193572469 (or 1193572452 counting only the distinct ones).

The product of its digits is 1783627776, while the sum is 76.

The spelling of 689884866274 in words is "six hundred eighty-nine billion, eight hundred eighty-four million, eight hundred sixty-six thousand, two hundred seventy-four".