667676 has 6 divisors (see below), whose sum is σ = 1168440. Its totient is φ = 333836.

The previous prime is 667673. The next prime is 667687. The reversal of 667676 is 676766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83456 + ... + 83463.

It is an arithmetic number, because the mean of its divisors is an integer number (194740).

2⁶⁶⁷⁶⁷⁶ is an apocalyptic number.

It is an amenable number.

667676 is a deficient number, since it is larger than the sum of its proper divisors (500764).

667676 is a wasteful number, since it uses less digits than its factorization.

667676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166923 (or 166921 counting only the distinct ones).

The product of its digits is 63504, while the sum is 38.

The square root of 667676 is about 817.1144350701. The cubic root of 667676 is about 87.4021109374.

The spelling of 667676 in words is "six hundred sixty-seven thousand, six hundred seventy-six".