6666368 has 16 divisors (see below), whose sum is σ = 13280910. Its totient is φ = 3333120.

The previous prime is 6666353. The next prime is 6666379. The reversal of 6666368 is 8636666.

It can be written as a sum of positive squares in only one way, i.e., 6512704 + 153664 = 2552^2 + 392^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×6666368² = 88880924622848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25913 + ... + 26168.

Almost surely, 2^6666368 is an apocalyptic number.

It is an amenable number.

6666368 is a deficient number, since it is larger than the sum of its proper divisors (6614542).

6666368 is an equidigital number, since it uses as much as digits as its factorization.

6666368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52095 (or 52083 counting only the distinct ones).

The product of its digits is 186624, while the sum is 41.

The square root of 6666368 is about 2581.9310602725. The cubic root of 6666368 is about 188.2043951733.

The spelling of 6666368 in words is "six million, six hundred sixty-six thousand, three hundred sixty-eight".