689834 has 4 divisors (see below), whose sum is σ = 1034754. Its totient is φ = 344916.

The previous prime is 689831. The next prime is 689851. The reversal of 689834 is 438986.

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

It can be written as a sum of positive squares in only one way, i.e., 390625 + 299209 = 625^2 + 547^2 .

It is not an unprimeable number, because it can be changed into a prime (689831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172457 + ... + 172460.

2⁶⁸⁹⁸³⁴ is an apocalyptic number.

689834 is a deficient number, since it is larger than the sum of its proper divisors (344920).

689834 is a wasteful number, since it uses less digits than its factorization.

689834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344919.

The product of its digits is 41472, while the sum is 38.

The square root of 689834 is about 830.5624600233. The cubic root of 689834 is about 88.3584723355.

The spelling of 689834 in words is "six hundred eighty-nine thousand, eight hundred thirty-four".