667603 has 8 divisors (see below), whose sum is σ = 720720. Its totient is φ = 616320.

The previous prime is 667577. The next prime is 667631. The reversal of 667603 is 306766.

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 667603 - 2⁹ = 667091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351 + ... + 1207.

It is an arithmetic number, because the mean of its divisors is an integer number (90090).

2⁶⁶⁷⁶⁰³ is an apocalyptic number.

667603 is a deficient number, since it is larger than the sum of its proper divisors (53117).

667603 is a wasteful number, since it uses less digits than its factorization.

667603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 667603 is about 817.0697644632. The cubic root of 667603 is about 87.3989254668.

The spelling of 667603 in words is "six hundred sixty-seven thousand, six hundred three".