689133760 has 112 divisors (see below), whose sum is σ = 1985857344. Its totient is φ = 222363648.

The previous prime is 689133749. The next prime is 689133761. The reversal of 689133760 is 67331986.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (689133761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29032 + ... + 47128.

Almost surely, 2^689133760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689133760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992928672).

689133760 is an abundant number, since it is smaller than the sum of its proper divisors (1296723584).

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

689133760 is a wasteful number, since it uses less digits than its factorization.

689133760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18138 (or 18128 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 689133760 is about 26251.3572982427. The cubic root of 689133760 is about 883.2856510000.

The spelling of 689133760 in words is "six hundred eighty-nine million, one hundred thirty-three thousand, seven hundred sixty".