676849 has 4 divisors (see below), whose sum is σ = 678564. Its totient is φ = 675136.

The previous prime is 676829. The next prime is 676859. The reversal of 676849 is 948676.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87025 + 589824 = 295^2 + 768^2 .

It is a cyclic number.

It is not a de Polignac number, because 676849 - 2⁷ = 676721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676829) by changing a digit.

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, 69 + ... + 1165.

It is an arithmetic number, because the mean of its divisors is an integer number (169641).

2⁶⁷⁶⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

676849 is a deficient number, since it is larger than the sum of its proper divisors (1715).

676849 is a wasteful number, since it uses less digits than its factorization.

676849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714.

The product of its digits is 72576, while the sum is 40.

The square root of 676849 is about 822.7083322782. The cubic root of 676849 is about 87.8005555492.

The spelling of 676849 in words is "six hundred seventy-six thousand, eight hundred forty-nine".