689133126 has 16 divisors (see below), whose sum is σ = 1503563328. Its totient is φ = 208828200.

The previous prime is 689133113. The next prime is 689133127. The reversal of 689133126 is 621331986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689133127) by changing a digit.

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, 5220640 + ... + 5220771.

It is an arithmetic number, because the mean of its divisors is an integer number (93972708).

Almost surely, 2^689133126 is an apocalyptic number.

689133126 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

689133126 is an abundant number, since it is smaller than the sum of its proper divisors (814430202).

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

689133126 is a wasteful number, since it uses less digits than its factorization.

689133126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441427.

The product of its digits is 46656, while the sum is 39.

The square root of 689133126 is about 26251.3452226738. The cubic root of 689133126 is about 883.2853801269.

The spelling of 689133126 in words is "six hundred eighty-nine million, one hundred thirty-three thousand, one hundred twenty-six".