6676661 has 2 divisors, whose sum is σ = 6676662. Its totient is φ = 6676660.

The previous prime is 6676651. The next prime is 6676667. The reversal of 6676661 is 1666766.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 649636 = 2455^2 + 806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6676661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6676667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3338330 + 3338331.

It is an arithmetic number, because the mean of its divisors is an integer number (3338331).

Almost surely, 2^6676661 is an apocalyptic number.

It is an amenable number.

6676661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6676661 is an equidigital number, since it uses as much as digits as its factorization.

6676661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 6676661 is about 2583.9235669810. The cubic root of 6676661 is about 188.3012090943.

It can be divided in two parts, 6676 and 661, that added together give a palindrome (7337).

The spelling of 6676661 in words is "six million, six hundred seventy-six thousand, six hundred sixty-one".