6662444664 has 32 divisors (see below), whose sum is σ = 17106279120. Its totient is φ = 2160792576.

The previous prime is 6662444651. The next prime is 6662444713. The reversal of 6662444664 is 4664442666.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent 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, 3750489 + ... + 3752264.

Almost surely, 2^6662444664 is an apocalyptic number.

It is an amenable number.

6662444664 is an abundant number, since it is smaller than the sum of its proper divisors (10443834456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6662444664 is a wasteful number, since it uses less digits than its factorization.

6662444664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7502799 (or 7502795 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 48.

The square root of 6662444664 is about 81623.7996175135. The cubic root of 6662444664 is about 1881.6746681989.

The spelling of 6662444664 in words is "six billion, six hundred sixty-two million, four hundred forty-four thousand, six hundred sixty-four".