6666709056 has 112 divisors (see below), whose sum is σ = 21219932160. Its totient is φ = 1804515840.

The previous prime is 6666709009. The next prime is 6666709057. The reversal of 6666709056 is 6509076666.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×6666709056² = 88890019274704822272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6666709057) 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, 105000 + ... + 156071.

It is an arithmetic number, because the mean of its divisors is an integer number (189463680).

Almost surely, 2^6666709056 is an apocalyptic number.

It is an amenable number.

6666709056 is an abundant number, since it is smaller than the sum of its proper divisors (14553223104).

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

6666709056 is a wasteful number, since it uses less digits than its factorization.

6666709056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261112 (or 261102 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 51.

The square root of 6666709056 is about 81649.9176729530. The cubic root of 6666709056 is about 1882.0760467426.

The spelling of 6666709056 in words is "six billion, six hundred sixty-six million, seven hundred nine thousand, fifty-six".