6776666 has 16 divisors (see below), whose sum is σ = 11104128. Its totient is φ = 3082800.

The previous prime is 6776641. The next prime is 6776677. The reversal of 6776666 is 6666776.

6776666 = 126² + 127² + ... + 281².

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, 11 + ... + 3681.

It is an arithmetic number, because the mean of its divisors is an integer number (694008).

Almost surely, 2^6776666 is an apocalyptic number.

6776666 is a deficient number, since it is larger than the sum of its proper divisors (4327462).

6776666 is a wasteful number, since it uses less digits than its factorization.

6776666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757.

The product of its digits is 381024, while the sum is 44.

The square root of 6776666 is about 2603.2030270419. The cubic root of 6776666 is about 189.2366975556.

The spelling of 6776666 in words is "six million, seven hundred seventy-six thousand, six hundred sixty-six".