676667 has 4 divisors (see below), whose sum is σ = 684360. Its totient is φ = 668976.

The previous prime is 676661. The next prime is 676679. The reversal of 676667 is 766676.

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 676667 - 2⁸ = 676411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 676667.

It is not an unprimeable number, because it can be changed into a prime (676661) 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, 3713 + ... + 3890.

It is an arithmetic number, because the mean of its divisors is an integer number (171090).

2⁶⁷⁶⁶⁶⁷ is an apocalyptic number.

676667 is a deficient number, since it is larger than the sum of its proper divisors (7693).

676667 is an equidigital number, since it uses as much as digits as its factorization.

676667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7692.

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

The square root of 676667 is about 822.5977145604. The cubic root of 676667 is about 87.7926851903.

Subtracting 676667 from its reverse (766676), we obtain a palindrome (90009).

The spelling of 676667 in words is "six hundred seventy-six thousand, six hundred sixty-seven".