667503 has 6 divisors (see below), whose sum is σ = 964184. Its totient is φ = 444996.

The previous prime is 667501. The next prime is 667507. The reversal of 667503 is 305766.

It is not a de Polignac number, because 667503 - 2¹ = 667501 is a prime.

It is a Duffinian number.

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 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, 37075 + ... + 37092.

2⁶⁶⁷⁵⁰³ is an apocalyptic number.

667503 is a deficient number, since it is larger than the sum of its proper divisors (296681).

667503 is a wasteful number, since it uses less digits than its factorization.

667503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74173 (or 74170 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 667503 is about 817.0085678865. The cubic root of 667503 is about 87.3945614316.

It can be divided in two parts, 66 and 7503, that added together give a square (7569 = 87²).

The spelling of 667503 in words is "six hundred sixty-seven thousand, five hundred three".