689767926 has 16 divisors (see below), whose sum is σ = 1380383424. Its totient is φ = 229781384.

The previous prime is 689767919. The next prime is 689767927. The reversal of 689767926 is 629767986.

689767926 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 689767926.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689767927) 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, 24480 + ... + 44483.

It is an arithmetic number, because the mean of its divisors is an integer number (86273964).

Almost surely, 2^689767926 is an apocalyptic number.

689767926 is an abundant number, since it is smaller than the sum of its proper divisors (690615498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689767926 is a wasteful number, since it uses less digits than its factorization.

689767926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70635.

The product of its digits is 13716864, while the sum is 60.

The square root of 689767926 is about 26263.4332485302. The cubic root of 689767926 is about 883.5565118135.

Adding to 689767926 its sum of digits (60), we get a palindrome (689767986).

The spelling of 689767926 in words is "six hundred eighty-nine million, seven hundred sixty-seven thousand, nine hundred twenty-six".