667588 has 24 divisors (see below), whose sum is σ = 1233792. Its totient is φ = 315744.

The previous prime is 667577. The next prime is 667631. The reversal of 667588 is 885766.

667588 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 667588.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9931 + ... + 9997.

It is an arithmetic number, because the mean of its divisors is an integer number (51408).

2⁶⁶⁷⁵⁸⁸ is an apocalyptic number.

It is an amenable number.

667588 is a deficient number, since it is larger than the sum of its proper divisors (566204).

667588 is a wasteful number, since it uses less digits than its factorization.

667588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 169 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 667588 is about 817.0605852689. The cubic root of 667588 is about 87.3982708893.

It can be divided in two parts, 66758 and 8, that added together give a palindrome (66766).

The spelling of 667588 in words is "six hundred sixty-seven thousand, five hundred eighty-eight".