6646677 has 16 divisors (see below), whose sum is σ = 9564480. Its totient is φ = 4090112.

The previous prime is 6646669. The next prime is 6646687. The reversal of 6646677 is 7766466.

It is a cyclic number.

It is not a de Polignac number, because 6646677 - 2³ = 6646669 is a prime.

6646677 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1474 + ... + 3932.

It is an arithmetic number, because the mean of its divisors is an integer number (597780).

Almost surely, 2^6646677 is an apocalyptic number.

It is an amenable number.

6646677 is a deficient number, since it is larger than the sum of its proper divisors (2917803).

6646677 is a wasteful number, since it uses less digits than its factorization.

6646677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532.

The product of its digits is 254016, while the sum is 42.

The square root of 6646677 is about 2578.1150090716. The cubic root of 6646677 is about 188.0189074842.

The spelling of 6646677 in words is "six million, six hundred forty-six thousand, six hundred seventy-seven".