667504 has 10 divisors (see below), whose sum is σ = 1293320. Its totient is φ = 333744.

The previous prime is 667501. The next prime is 667507. The reversal of 667504 is 405766.

667504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (667501) and next prime (667507).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20844 + ... + 20875.

It is an arithmetic number, because the mean of its divisors is an integer number (129332).

2⁶⁶⁷⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

667504 is a deficient number, since it is larger than the sum of its proper divisors (625816).

667504 is a wasteful number, since it uses less digits than its factorization.

667504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41727 (or 41721 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 667504 is about 817.0091798750. The cubic root of 667504 is about 87.3946050742.

The spelling of 667504 in words is "six hundred sixty-seven thousand, five hundred four".