66131002 has 16 divisors (see below), whose sum is σ = 113872320. Its totient is φ = 28215648.

The previous prime is 66130993. The next prime is 66131041. The reversal of 66131002 is 20013166.

66131002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7227 + ... + 13582.

It is an arithmetic number, because the mean of its divisors is an integer number (7117020).

Almost surely, 2^66131002 is an apocalyptic number.

66131002 is a deficient number, since it is larger than the sum of its proper divisors (47741318).

66131002 is a wasteful number, since it uses less digits than its factorization.

66131002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21045.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 66131002 is about 8132.0970235235. The cubic root of 66131002 is about 404.3912044052.

Adding to 66131002 its reverse (20013166), we get a palindrome (86144168).

The spelling of 66131002 in words is "sixty-six million, one hundred thirty-one thousand, two".