689127238 has 4 divisors (see below), whose sum is σ = 1033690860. Its totient is φ = 344563618.

The previous prime is 689127217. The next prime is 689127247. The reversal of 689127238 is 832721986.

689127238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172281808 + ... + 172281811.

It is an arithmetic number, because the mean of its divisors is an integer number (258422715).

Almost surely, 2^689127238 is an apocalyptic number.

689127238 is a deficient number, since it is larger than the sum of its proper divisors (344563622).

689127238 is a wasteful number, since it uses less digits than its factorization.

689127238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344563621.

The product of its digits is 290304, while the sum is 46.

The square root of 689127238 is about 26251.2330758005. The cubic root of 689127238 is about 883.2828645031.

The spelling of 689127238 in words is "six hundred eighty-nine million, one hundred twenty-seven thousand, two hundred thirty-eight".