66055003 has 4 divisors (see below), whose sum is σ = 75491440. Its totient is φ = 56618568.

The previous prime is 66054997. The next prime is 66055019. The reversal of 66055003 is 30055066.

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 66055003 - 2⁹ = 66054491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66055303) 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, 4718208 + ... + 4718221.

It is an arithmetic number, because the mean of its divisors is an integer number (18872860).

Almost surely, 2^66055003 is an apocalyptic number.

66055003 is a deficient number, since it is larger than the sum of its proper divisors (9436437).

66055003 is an equidigital number, since it uses as much as digits as its factorization.

66055003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9436436.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 66055003 is about 8127.4229002803. The cubic root of 66055003 is about 404.2362336812.

The spelling of 66055003 in words is "sixty-six million, fifty-five thousand, three".