676840 has 16 divisors (see below), whose sum is σ = 1522980. Its totient is φ = 270720.

The previous prime is 676829. The next prime is 676859. The reversal of 676840 is 48676.

676840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 675684 + 1156 = 822^2 + 34^2 .

It is a super-2 number, since 2×676840² = 916224771200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8421 + ... + 8500.

2⁶⁷⁶⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

676840 is an abundant number, since it is smaller than the sum of its proper divisors (846140).

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

676840 is a wasteful number, since it uses less digits than its factorization.

676840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16932 (or 16928 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 676840 is about 822.7028625208. The cubic root of 676840 is about 87.8001663887.

The spelling of 676840 in words is "six hundred seventy-six thousand, eight hundred forty".