6666006522 has 48 divisors (see below), whose sum is σ = 15567883200. Its totient is φ = 1864024512.

The previous prime is 6666006481. The next prime is 6666006547. The reversal of 6666006522 is 2256006666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56854 + ... + 128702.

It is an arithmetic number, because the mean of its divisors is an integer number (324330900).

Almost surely, 2^6666006522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6666006522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7783941600).

6666006522 is an abundant number, since it is smaller than the sum of its proper divisors (8901876678).

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

6666006522 is a wasteful number, since it uses less digits than its factorization.

6666006522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71955 (or 71908 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 6666006522 is about 81645.6154487184. The cubic root of 6666006522 is about 1882.0099337199.

The spelling of 6666006522 in words is "six billion, six hundred sixty-six million, six thousand, five hundred twenty-two".