676831 has 4 divisors (see below), whose sum is σ = 700200. Its totient is φ = 653464.

The previous prime is 676829. The next prime is 676859. The reversal of 676831 is 138676.

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

It is a cyclic number.

It is not a de Polignac number, because 676831 - 2¹ = 676829 is a prime.

It is a super-2 number, since 2×676831² = 916200405122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

676831 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 676793 and 676802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11641 + ... + 11698.

It is an arithmetic number, because the mean of its divisors is an integer number (175050).

2⁶⁷⁶⁸³¹ is an apocalyptic number.

676831 is a deficient number, since it is larger than the sum of its proper divisors (23369).

676831 is a wasteful number, since it uses less digits than its factorization.

676831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23368.

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

The square root of 676831 is about 822.6973927271. The cubic root of 676831 is about 87.7997772249.

The spelling of 676831 in words is "six hundred seventy-six thousand, eight hundred thirty-one".