689040894238 has 8 divisors (see below), whose sum is σ = 1033578208080. Its totient is φ = 344514824880.

The previous prime is 689040894233. The next prime is 689040894239. The reversal of 689040894238 is 832498040986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689040894233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2656218 + ... + 2904061.

It is an arithmetic number, because the mean of its divisors is an integer number (129197276010).

Almost surely, 2^689040894238 is an apocalyptic number.

689040894238 is a deficient number, since it is larger than the sum of its proper divisors (344537313842).

689040894238 is a wasteful number, since it uses less digits than its factorization.

689040894238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5622242.

The product of its (nonzero) digits is 23887872, while the sum is 61.

The spelling of 689040894238 in words is "six hundred eighty-nine billion, forty million, eight hundred ninety-four thousand, two hundred thirty-eight".