6668074128 has 80 divisors (see below), whose sum is σ = 17426245760. Its totient is φ = 2196937728.

The previous prime is 6668074123. The next prime is 6668074129. The reversal of 6668074128 is 8214708666.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (6668074123) 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, 2546676 + ... + 2549292.

It is an arithmetic number, because the mean of its divisors is an integer number (217828072).

Almost surely, 2^6668074128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6668074128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8713122880).

6668074128 is an abundant number, since it is smaller than the sum of its proper divisors (10758171632).

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

6668074128 is a wasteful number, since it uses less digits than its factorization.

6668074128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224 (or 3218 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 6668074128 is about 81658.2765431649. The cubic root of 6668074128 is about 1882.2044956248.

The spelling of 6668074128 in words is "six billion, six hundred sixty-eight million, seventy-four thousand, one hundred twenty-eight".