667683 has 10 divisors (see below), whose sum is σ = 997524. Its totient is φ = 445068.

The previous prime is 667673. The next prime is 667687. The reversal of 667683 is 386766.

It is a happy number.

It is not a de Polignac number, because 667683 - 2⁸ = 667427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667687) 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 in 9 ways as a sum of consecutive naturals, for example, 4041 + ... + 4202.

2⁶⁶⁷⁶⁸³ is an apocalyptic number.

667683 is a deficient number, since it is larger than the sum of its proper divisors (329841).

667683 is an equidigital number, since it uses as much as digits as its factorization.

667683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8255 (or 8246 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 667683 is about 817.1187184247. The cubic root of 667683 is about 87.4024163812.

The spelling of 667683 in words is "six hundred sixty-seven thousand, six hundred eighty-three".