660700003 has 4 divisors (see below), whose sum is σ = 668660328. Its totient is φ = 652739680.

The previous prime is 660699997. The next prime is 660700013. The reversal of 660700003 is 300007066.

It is a happy number.

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 660700003 - 2⁵ = 660699971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660700013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3980038 + ... + 3980203.

It is an arithmetic number, because the mean of its divisors is an integer number (167165082).

Almost surely, 2^660700003 is an apocalyptic number.

660700003 is a deficient number, since it is larger than the sum of its proper divisors (7960325).

660700003 is an equidigital number, since it uses as much as digits as its factorization.

660700003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7960324.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 660700003 is about 25704.0853367709. The cubic root of 660700003 is about 870.9664703342.

Adding to 660700003 its reverse (300007066), we get a palindrome (960707069).

The spelling of 660700003 in words is "six hundred sixty million, seven hundred thousand, three".