6686044266 has 16 divisors (see below), whose sum is σ = 14587733088. Its totient is φ = 2026074000.

The previous prime is 6686044259. The next prime is 6686044297. The reversal of 6686044266 is 6624406866.

It is a happy number.

It is a super-2 number, since 2×6686044266² = 89406375853822957512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50651785 + ... + 50651916.

It is an arithmetic number, because the mean of its divisors is an integer number (911733318).

Almost surely, 2^6686044266 is an apocalyptic number.

6686044266 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6686044266 is an abundant number, since it is smaller than the sum of its proper divisors (7901688822).

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

6686044266 is a wasteful number, since it uses less digits than its factorization.

6686044266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101303717.

The product of its (nonzero) digits is 1990656, while the sum is 48.

The square root of 6686044266 is about 81768.2350671702. The cubic root of 6686044266 is about 1883.8937957676.

The spelling of 6686044266 in words is "six billion, six hundred eighty-six million, forty-four thousand, two hundred sixty-six".