689132438958 has 8 divisors (see below), whose sum is σ = 1378264877928. Its totient is φ = 229710812984.

The previous prime is 689132438903. The next prime is 689132438983. The reversal of 689132438958 is 859834231986.

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

689132438958 is an admirable number.

It is a super-2 number, since 2×689132438958² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57427703241 + ... + 57427703252.

It is an arithmetic number, because the mean of its divisors is an integer number (172283109741).

Almost surely, 2^689132438958 is an apocalyptic number.

689132438958 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

689132438958 is a wasteful number, since it uses less digits than its factorization.

689132438958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114855406498.

The product of its digits is 89579520, while the sum is 66.

The spelling of 689132438958 in words is "six hundred eighty-nine billion, one hundred thirty-two million, four hundred thirty-eight thousand, nine hundred fifty-eight".