676689 has 8 divisors (see below), whose sum is σ = 971712. Its totient is φ = 416400.

The previous prime is 676679. The next prime is 676703. The reversal of 676689 is 986676.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 676689 - 2¹² = 672593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 676689.

It is not an unprimeable number, because it can be changed into a prime (676649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8637 + ... + 8714.

It is an arithmetic number, because the mean of its divisors is an integer number (121464).

2⁶⁷⁶⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

676689 is a deficient number, since it is larger than the sum of its proper divisors (295023).

676689 is a wasteful number, since it uses less digits than its factorization.

676689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17367.

The product of its digits is 108864, while the sum is 42.

The square root of 676689 is about 822.6110867232. The cubic root of 676689 is about 87.7936366273.

The spelling of 676689 in words is "six hundred seventy-six thousand, six hundred eighty-nine".