689586042 has 8 divisors (see below), whose sum is σ = 1379172096. Its totient is φ = 229862012.

The previous prime is 689586031. The next prime is 689586059. The reversal of 689586042 is 240685986.

It is a happy number.

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

689586042 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 689585982 and 689586000.

It is an unprimeable number.

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, 57465498 + ... + 57465509.

It is an arithmetic number, because the mean of its divisors is an integer number (172396512).

Almost surely, 2^689586042 is an apocalyptic number.

689586042 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.

689586042 is a wasteful number, since it uses less digits than its factorization.

689586042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114931012.

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 689586042 is about 26259.9703350937. The cubic root of 689586042 is about 883.4788437003.

The spelling of 689586042 in words is "six hundred eighty-nine million, five hundred eighty-six thousand, forty-two".