689368 has 8 divisors (see below), whose sum is σ = 1292580. Its totient is φ = 344680.

The previous prime is 689357. The next prime is 689369. The reversal of 689368 is 863986.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 689368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43078 + ... + 43093.

2⁶⁸⁹³⁶⁸ is an apocalyptic number.

It is an amenable number.

689368 is a deficient number, since it is larger than the sum of its proper divisors (603212).

689368 is a wasteful number, since it uses less digits than its factorization.

689368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86177 (or 86173 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 689368 is about 830.2818798456. The cubic root of 689368 is about 88.3385717395.

The spelling of 689368 in words is "six hundred eighty-nine thousand, three hundred sixty-eight".