689304242 has 8 divisors (see below), whose sum is σ = 1127952432. Its totient is φ = 313320100.

The previous prime is 689304229. The next prime is 689304263. The reversal of 689304242 is 242403986.

It is a happy number.

689304242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 689304196 and 689304205.

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, 15665984 + ... + 15666027.

It is an arithmetic number, because the mean of its divisors is an integer number (140994054).

Almost surely, 2^689304242 is an apocalyptic number.

689304242 is a deficient number, since it is larger than the sum of its proper divisors (438648190).

689304242 is a wasteful number, since it uses less digits than its factorization.

689304242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31332024.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 689304242 is about 26254.6042057388. The cubic root of 689304242 is about 883.3584824769.

The spelling of 689304242 in words is "six hundred eighty-nine million, three hundred four thousand, two hundred forty-two".