6660040224 has 48 divisors (see below), whose sum is σ = 18510998688. Its totient is φ = 2089423872.

The previous prime is 6660040223. The next prime is 6660040243. The reversal of 6660040224 is 4220400666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×6660040224² = 88712271570595940352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6660040191 and 6660040200.

It is not an unprimeable number, because it can be changed into a prime (6660040223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2038822 + ... + 2042085.

It is an arithmetic number, because the mean of its divisors is an integer number (385645806).

Almost surely, 2^6660040224 is an apocalyptic number.

It is an amenable number.

6660040224 is an abundant number, since it is smaller than the sum of its proper divisors (11850958464).

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

6660040224 is a wasteful number, since it uses less digits than its factorization.

6660040224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080937 (or 4080929 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 6660040224 is about 81609.0694959819. The cubic root of 6660040224 is about 1881.4482789154.

The spelling of 6660040224 in words is "six billion, six hundred sixty million, forty thousand, two hundred twenty-four".