667556003 has 4 divisors (see below), whose sum is σ = 673680480. Its totient is φ = 661431528.

The previous prime is 667555963. The next prime is 667556009. The reversal of 667556003 is 300655766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 667556003 - 2⁶ = 667555939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667556009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3062075 + ... + 3062292.

It is an arithmetic number, because the mean of its divisors is an integer number (168420120).

Almost surely, 2^667556003 is an apocalyptic number.

667556003 is a deficient number, since it is larger than the sum of its proper divisors (6124477).

667556003 is a wasteful number, since it uses less digits than its factorization.

667556003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124476.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 667556003 is about 25837.1051590537. The cubic root of 667556003 is about 873.9687455550.

The spelling of 667556003 in words is "six hundred sixty-seven million, five hundred fifty-six thousand, three".