6666028707 has 16 divisors (see below), whose sum is σ = 9586563840. Its totient is φ = 4095815712.

The previous prime is 6666028667. The next prime is 6666028709. The reversal of 6666028707 is 7078206666.

It is a happy number.

It is not a de Polignac number, because 6666028707 - 2¹⁴ = 6666012323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6666028709) 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, 106857 + ... + 157322.

It is an arithmetic number, because the mean of its divisors is an integer number (599160240).

Almost surely, 2^6666028707 is an apocalyptic number.

6666028707 is a deficient number, since it is larger than the sum of its proper divisors (2920535133).

6666028707 is a wasteful number, since it uses less digits than its factorization.

6666028707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264842.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 6666028707 is about 81645.7513101570. The cubic root of 6666028707 is about 1882.0120215439.

The spelling of 6666028707 in words is "six billion, six hundred sixty-six million, twenty-eight thousand, seven hundred seven".