66755003 has 10 divisors (see below), whose sum is σ = 77879004. Its totient is φ = 57216516.

The previous prime is 66754969. The next prime is 66755027. The reversal of 66755003 is 30055766.

It is not a de Polignac number, because 66755003 - 2⁶ = 66754939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66755063) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11501 + ... + 16302.

Almost surely, 2^66755003 is an apocalyptic number.

66755003 is a deficient number, since it is larger than the sum of its proper divisors (11124001).

66755003 is an frugal number, since it uses more digits than its factorization.

66755003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27831 (or 27810 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 66755003 is about 8170.3734920749. The cubic root of 66755003 is about 405.6591471352.

The spelling of 66755003 in words is "sixty-six million, seven hundred fifty-five thousand, three".