689796 has 30 divisors (see below), whose sum is σ = 1804110. Its totient is φ = 229824.

The previous prime is 689789. The next prime is 689797. The reversal of 689796 is 697986.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 171396 = 720^2 + 414^2 .

It is not an unprimeable number, because it can be changed into a prime (689797) by changing a digit.

689796 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 9 ways as a sum of consecutive naturals, for example, 741 + ... + 1388.

It is an arithmetic number, because the mean of its divisors is an integer number (60137).

2⁶⁸⁹⁷⁹⁶ is an apocalyptic number.

It is an amenable number.

689796 is an abundant number, since it is smaller than the sum of its proper divisors (1114314).

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

689796 is a wasteful number, since it uses less digits than its factorization.

689796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2134 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 689796 is about 830.5395836443. The cubic root of 689796 is about 88.3568498758.

It can be divided in two parts, 689 and 796, that added together give a triangular number (1485 = T₅₄).

The spelling of 689796 in words is "six hundred eighty-nine thousand, seven hundred ninety-six".