481216666 has 16 divisors (see below), whose sum is σ = 825454080. Its totient is φ = 206107920.

The previous prime is 481216663. The next prime is 481216753. The reversal of 481216666 is 666612184.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (481216663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14856 + ... + 34396.

It is an arithmetic number, because the mean of its divisors is an integer number (51590880).

Almost surely, 2^481216666 is an apocalyptic number.

481216666 is a deficient number, since it is larger than the sum of its proper divisors (344237414).

481216666 is a wasteful number, since it uses less digits than its factorization.

481216666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21309.

The product of its digits is 82944, while the sum is 40.

The square root of 481216666 is about 21936.6512029526. The cubic root of 481216666 is about 783.6345098513.

The spelling of 481216666 in words is "four hundred eighty-one million, two hundred sixteen thousand, six hundred sixty-six".