6666526704 has 20 divisors (see below), whose sum is σ = 17221860776. Its totient is φ = 2222175552.

The previous prime is 6666526697. The next prime is 6666526709. The reversal of 6666526704 is 4076256666.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 138885973 = 6666526704 / (6 + 6 + 6 + 6 + 5 + 2 + 6 + 7 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666526709) 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 3 ways as a sum of consecutive naturals, for example, 69442939 + ... + 69443034.

Almost surely, 2^6666526704 is an apocalyptic number.

It is an amenable number.

6666526704 is an abundant number, since it is smaller than the sum of its proper divisors (10555334072).

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

6666526704 is a wasteful number, since it uses less digits than its factorization.

6666526704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138885984 (or 138885978 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 48.

The square root of 6666526704 is about 81648.8009954831. The cubic root of 6666526704 is about 1882.0588866787.

The spelling of 6666526704 in words is "six billion, six hundred sixty-six million, five hundred twenty-six thousand, seven hundred four".