689142368 has 12 divisors (see below), whose sum is σ = 1356749100. Its totient is φ = 344571168.

The previous prime is 689142343. The next prime is 689142403. The reversal of 689142368 is 863241986.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10767818 + ... + 10767881.

It is an arithmetic number, because the mean of its divisors is an integer number (113062425).

Almost surely, 2^689142368 is an apocalyptic number.

It is an amenable number.

689142368 is a deficient number, since it is larger than the sum of its proper divisors (667606732).

689142368 is a wasteful number, since it uses less digits than its factorization.

689142368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21535709 (or 21535701 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 689142368 is about 26251.5212511580. The cubic root of 689142368 is about 883.2893287046.

The spelling of 689142368 in words is "six hundred eighty-nine million, one hundred forty-two thousand, three hundred sixty-eight".