6666766670 has 32 divisors (see below), whose sum is σ = 12262828032. Its totient is φ = 2608965792.

The previous prime is 6666766669. The next prime is 6666766681. The reversal of 6666766670 is 766676666.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46499 + ... + 124481.

It is an arithmetic number, because the mean of its divisors is an integer number (383213376).

Almost surely, 2^6666766670 is an apocalyptic number.

6666766670 is a deficient number, since it is larger than the sum of its proper divisors (5596061362).

6666766670 is a wasteful number, since it uses less digits than its factorization.

6666766670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78176.

The product of its (nonzero) digits is 13716864, while the sum is 56.

The square root of 6666766670 is about 81650.2704833242. The cubic root of 6666766670 is about 1882.0814683890.

The spelling of 6666766670 in words is "six billion, six hundred sixty-six million, seven hundred sixty-six thousand, six hundred seventy".