3211456666 has 48 divisors (see below), whose sum is σ = 5406535008. Its totient is φ = 1418788800.

The previous prime is 3211456657. The next prime is 3211456669. The reversal of 3211456666 is 6666541123.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3211456669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9702121 + ... + 9702451.

It is an arithmetic number, because the mean of its divisors is an integer number (112636146).

Almost surely, 2^3211456666 is an apocalyptic number.

3211456666 is a deficient number, since it is larger than the sum of its proper divisors (2195078342).

3211456666 is a wasteful number, since it uses less digits than its factorization.

3211456666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 554 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 3211456666 is about 56669.7155983688. The cubic root of 3211456666 is about 1475.3691181540.

Adding to 3211456666 its reverse (6666541123), we get a palindrome (9877997789).

The spelling of 3211456666 in words is "three billion, two hundred eleven million, four hundred fifty-six thousand, six hundred sixty-six".