667607 has 8 divisors (see below), whose sum is σ = 714096. Its totient is φ = 621952.

The previous prime is 667577. The next prime is 667631. The reversal of 667607 is 706766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 667607 - 2⁸ = 667351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 667607.

It is not an unprimeable number, because it can be changed into a prime (667657) 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 7 ways as a sum of consecutive naturals, for example, 2828 + ... + 3054.

It is an arithmetic number, because the mean of its divisors is an integer number (89262).

2⁶⁶⁷⁶⁰⁷ is an apocalyptic number.

667607 is a deficient number, since it is larger than the sum of its proper divisors (46489).

667607 is a wasteful number, since it uses less digits than its factorization.

667607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 667607 is about 817.0722122310. The cubic root of 667607 is about 87.3991000192.

The spelling of 667607 in words is "six hundred sixty-seven thousand, six hundred seven".