666367 has 6 divisors (see below), whose sum is σ = 721752. Its totient is φ = 614952.

The previous prime is 666353. The next prime is 666403. The reversal of 666367 is 763666.

It is not a de Polignac number, because 666367 - 2¹¹ = 664319 is a prime.

It is a Duffinian number.

666367 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1803 + ... + 2140.

It is an arithmetic number, because the mean of its divisors is an integer number (120292).

2⁶⁶⁶³⁶⁷ is an apocalyptic number.

666367 is a deficient number, since it is larger than the sum of its proper divisors (55385).

666367 is a wasteful number, since it uses less digits than its factorization.

666367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969 (or 3956 counting only the distinct ones).

The product of its digits is 27216, while the sum is 34.

The square root of 666367 is about 816.3130526949. The cubic root of 666367 is about 87.3449553647.

The spelling of 666367 in words is "six hundred sixty-six thousand, three hundred sixty-seven".