1333217666 has 32 divisors (see below), whose sum is σ = 2248646400. Its totient is φ = 587598480.

The previous prime is 1333217663. The next prime is 1333217687. The reversal of 1333217666 is 6667123331.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1333217663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126425 + ... + 136563.

It is an arithmetic number, because the mean of its divisors is an integer number (70270200).

Almost surely, 2^1333217666 is an apocalyptic number.

1333217666 is a deficient number, since it is larger than the sum of its proper divisors (915428734).

1333217666 is a wasteful number, since it uses less digits than its factorization.

1333217666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10334.

The product of its digits is 81648, while the sum is 38.

The square root of 1333217666 is about 36513.2532924690. The cubic root of 1333217666 is about 1100.6105882845.

The spelling of 1333217666 in words is "one billion, three hundred thirty-three million, two hundred seventeen thousand, six hundred sixty-six".