689902 has 8 divisors (see below), whose sum is σ = 1062936. Its totient is φ = 335592.

The previous prime is 689893. The next prime is 689903. The reversal of 689902 is 209986.

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 (689903) by changing a digit.

689902 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 4588 + ... + 4735.

It is an arithmetic number, because the mean of its divisors is an integer number (132867).

2⁶⁸⁹⁹⁰² is an apocalyptic number.

689902 is a deficient number, since it is larger than the sum of its proper divisors (373034).

689902 is a wasteful number, since it uses less digits than its factorization.

689902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9362.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 689902 is about 830.6033951291. The cubic root of 689902 is about 88.3613755357.

The spelling of 689902 in words is "six hundred eighty-nine thousand, nine hundred two".