6880666 has 12 divisors (see below), whose sum is σ = 11176542. Its totient is φ = 3175536.

The previous prime is 6880651. The next prime is 6880673. The reversal of 6880666 is 6660886.

It can be written as a sum of positive squares in 3 ways, for example, as 3744225 + 3136441 = 1935^2 + 1771^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9841 + ... + 10516.

Almost surely, 2^6880666 is an apocalyptic number.

6880666 is a deficient number, since it is larger than the sum of its proper divisors (4295876).

6880666 is a wasteful number, since it uses less digits than its factorization.

6880666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20385 (or 20372 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 6880666 is about 2623.1023617084. The cubic root of 6880666 is about 190.1998451276.

The spelling of 6880666 in words is "six million, eight hundred eighty thousand, six hundred sixty-six".