331244666 has 8 divisors (see below), whose sum is σ = 518469984. Its totient is φ = 158421340.

The previous prime is 331244663. The next prime is 331244671. The reversal of 331244666 is 666442133.

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

It is not an unprimeable number, because it can be changed into a prime (331244663) 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 3 ways as a sum of consecutive naturals, for example, 3600440 + ... + 3600531.

It is an arithmetic number, because the mean of its divisors is an integer number (64808748).

Almost surely, 2^331244666 is an apocalyptic number.

331244666 is a deficient number, since it is larger than the sum of its proper divisors (187225318).

331244666 is a wasteful number, since it uses less digits than its factorization.

331244666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7200996.

The product of its digits is 62208, while the sum is 35.

The square root of 331244666 is about 18200.1281863618. The cubic root of 331244666 is about 691.9100379226.

Adding to 331244666 its reverse (666442133), we get a palindrome (997686799).

The spelling of 331244666 in words is "three hundred thirty-one million, two hundred forty-four thousand, six hundred sixty-six".