66330946 has 16 divisors (see below), whose sum is σ = 112285440. Its totient is φ = 29110480.

The previous prime is 66330857. The next prime is 66330947. The reversal of 66330946 is 64903366.

It is not an unprimeable number, because it can be changed into a prime (66330947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51346 + ... + 52621.

It is an arithmetic number, because the mean of its divisors is an integer number (7017840).

Almost surely, 2^66330946 is an apocalyptic number.

66330946 is a deficient number, since it is larger than the sum of its proper divisors (45954494).

66330946 is a wasteful number, since it uses less digits than its factorization.

66330946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104009.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 66330946 is about 8144.3812533550. The cubic root of 66330946 is about 404.7983470030.

It can be divided in two parts, 66330 and 946, that added together give a palindrome (67276).

The spelling of 66330946 in words is "sixty-six million, three hundred thirty thousand, nine hundred forty-six".