66440882 has 16 divisors (see below), whose sum is σ = 104457600. Its totient is φ = 31634592.

The previous prime is 66440873. The next prime is 66440893. The reversal of 66440882 is 28804466.

It is a happy number.

It is an unprimeable number.

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, 7619 + ... + 13817.

It is an arithmetic number, because the mean of its divisors is an integer number (6528600).

Almost surely, 2^66440882 is an apocalyptic number.

66440882 is a deficient number, since it is larger than the sum of its proper divisors (38016718).

66440882 is a wasteful number, since it uses less digits than its factorization.

66440882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6457.

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 66440882 is about 8151.1276520491. The cubic root of 66440882 is about 405.0218593089.

The spelling of 66440882 in words is "sixty-six million, four hundred forty thousand, eight hundred eighty-two".