689450 has 12 divisors (see below), whose sum is σ = 1282470. Its totient is φ = 275760.

The previous prime is 689441. The next prime is 689459. The reversal of 689450 is 54986.

689450 is nontrivially palindromic in base 4.

It is an interprime number because it is at equal distance from previous prime (689441) and next prime (689459).

It can be written as a sum of positive squares in 3 ways, for example, as 654481 + 34969 = 809^2 + 187^2 .

It is not an unprimeable number, because it can be changed into a prime (689459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6845 + ... + 6944.

2⁶⁸⁹⁴⁵⁰ is an apocalyptic number.

689450 is a deficient number, since it is larger than the sum of its proper divisors (593020).

689450 is a wasteful number, since it uses less digits than its factorization.

689450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13801 (or 13796 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 689450 is about 830.3312591972. The cubic root of 689450 is about 88.3420742112.

The spelling of 689450 in words is "six hundred eighty-nine thousand, four hundred fifty".