689403242880 has 512 divisors, whose sum is σ = 2703408652800. Its totient is φ = 164630568960.

The previous prime is 689403242873. The next prime is 689403242887. The reversal of 689403242880 is 88242304986.

It is an interprime number because it is at equal distance from previous prime (689403242873) and next prime (689403242887).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689403242887) 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 63 ways as a sum of consecutive naturals, for example, 12708294 + ... + 12762426.

It is an arithmetic number, because the mean of its divisors is an integer number (5280095025).

Almost surely, 2^689403242880 is an apocalyptic number.

689403242880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689403242880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351704326400).

689403242880 is an abundant number, since it is smaller than the sum of its proper divisors (2014005409920).

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

689403242880 is a wasteful number, since it uses less digits than its factorization.

689403242880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54239 (or 54221 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The spelling of 689403242880 in words is "six hundred eighty-nine billion, four hundred three million, two hundred forty-two thousand, eight hundred eighty".