667876 has 24 divisors (see below), whose sum is σ = 1308384. Its totient is φ = 295680.

The previous prime is 667867. The next prime is 667883. The reversal of 667876 is 678766.

It is an unprimeable number.

667876 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1716 + ... + 2068.

It is an arithmetic number, because the mean of its divisors is an integer number (54516).

667876 is a Friedman number, since it can be written as 7766*86, using all its digits and the basic arithmetic operations.

2⁶⁶⁷⁸⁷⁶ is an apocalyptic number.

It is an amenable number.

667876 is a deficient number, since it is larger than the sum of its proper divisors (640508).

667876 is a wasteful number, since it uses less digits than its factorization.

667876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 409 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 667876 is about 817.2368077858. The cubic root of 667876 is about 87.4108370645.

It can be divided in two parts, 6678 and 76, that multiplied together give a triangular number (507528 = T₁₀₀₇).

The spelling of 667876 in words is "six hundred sixty-seven thousand, eight hundred seventy-six".