6666345 has 24 divisors (see below), whose sum is σ = 13206336. Its totient is φ = 3047328.

The previous prime is 6666337. The next prime is 6666347. The reversal of 6666345 is 5436666.

It is not a de Polignac number, because 6666345 - 2³ = 6666337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6666347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10267 + ... + 10896.

It is an arithmetic number, because the mean of its divisors is an integer number (550264).

Almost surely, 2^6666345 is an apocalyptic number.

It is an amenable number.

6666345 is a deficient number, since it is larger than the sum of its proper divisors (6539991).

6666345 is a wasteful number, since it uses less digits than its factorization.

6666345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21181 (or 21178 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 6666345 is about 2581.9266062381. The cubic root of 6666345 is about 188.2041787283.

The spelling of 6666345 in words is "six million, six hundred sixty-six thousand, three hundred forty-five".