689854 has 8 divisors (see below), whose sum is σ = 1128888. Its totient is φ = 313560.

The previous prime is 689851. The next prime is 689867. The reversal of 689854 is 458986.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15657 + ... + 15700.

It is an arithmetic number, because the mean of its divisors is an integer number (141111).

2⁶⁸⁹⁸⁵⁴ is an apocalyptic number.

689854 is a deficient number, since it is larger than the sum of its proper divisors (439034).

689854 is a wasteful number, since it uses less digits than its factorization.

689854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31370.

The product of its digits is 69120, while the sum is 40.

The square root of 689854 is about 830.5744999697. The cubic root of 689854 is about 88.3593262377.

The spelling of 689854 in words is "six hundred eighty-nine thousand, eight hundred fifty-four".