689682 has 16 divisors (see below), whose sum is σ = 1576512. Its totient is φ = 197040.

The previous prime is 689641. The next prime is 689693. The reversal of 689682 is 286986.

It is a super-2 number, since 2×689682² = 951322522248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689682.

It is an unprimeable number.

689682 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8169 + ... + 8252.

It is an arithmetic number, because the mean of its divisors is an integer number (98532).

2⁶⁸⁹⁶⁸² is an apocalyptic number.

689682 is an abundant number, since it is smaller than the sum of its proper divisors (886830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689682 is a wasteful number, since it uses less digits than its factorization.

689682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16433.

The product of its digits is 41472, while the sum is 39.

The square root of 689682 is about 830.4709507262. The cubic root of 689682 is about 88.3519821391.

The spelling of 689682 in words is "six hundred eighty-nine thousand, six hundred eighty-two".