66231003 has 8 divisors (see below), whose sum is σ = 88345600. Its totient is φ = 44135208.

The previous prime is 66230971. The next prime is 66231019. The reversal of 66231003 is 30013266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66231003 - 2⁵ = 66230971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66231023) 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 7 ways as a sum of consecutive naturals, for example, 11538 + ... + 16296.

It is an arithmetic number, because the mean of its divisors is an integer number (11043200).

Almost surely, 2^66231003 is an apocalyptic number.

66231003 is a deficient number, since it is larger than the sum of its proper divisors (22114597).

66231003 is a wasteful number, since it uses less digits than its factorization.

66231003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9401.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 66231003 is about 8138.2432379476. The cubic root of 66231003 is about 404.5949371829.

Adding to 66231003 its reverse (30013266), we get a palindrome (96244269).

It can be divided in two parts, 6623 and 1003, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 66231003 in words is "sixty-six million, two hundred thirty-one thousand, three".