676813 has 4 divisors (see below), whose sum is σ = 683488. Its totient is φ = 670140.

The previous prime is 676807. The next prime is 676829. The reversal of 676813 is 318676.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676813 is a prime.

It is a Duffinian number.

676813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676883) 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, 3183 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (170872).

2⁶⁷⁶⁸¹³ is an apocalyptic number.

It is an amenable number.

676813 is a deficient number, since it is larger than the sum of its proper divisors (6675).

676813 is a wasteful number, since it uses less digits than its factorization.

676813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674.

The product of its digits is 6048, while the sum is 31.

The square root of 676813 is about 822.6864530306. The cubic root of 676813 is about 87.7989988868.

The spelling of 676813 in words is "six hundred seventy-six thousand, eight hundred thirteen".