689776292 has 24 divisors (see below), whose sum is σ = 1309293720. Its totient is φ = 316682240.

The previous prime is 689776273. The next prime is 689776301. The reversal of 689776292 is 292677986.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 226924096 + 462852196 = 15064^2 + 21514^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120917 + ... + 126492.

It is an arithmetic number, because the mean of its divisors is an integer number (54553905).

Almost surely, 2^689776292 is an apocalyptic number.

It is an amenable number.

689776292 is a deficient number, since it is larger than the sum of its proper divisors (619517428).

689776292 is a wasteful number, since it uses less digits than its factorization.

689776292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247471 (or 247469 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 56.

The square root of 689776292 is about 26263.5925189225. The cubic root of 689776292 is about 883.5600839347.

The spelling of 689776292 in words is "six hundred eighty-nine million, seven hundred seventy-six thousand, two hundred ninety-two".