6677777 has 2 divisors, whose sum is σ = 6677778. Its totient is φ = 6677776.

The previous prime is 6677767. The next prime is 6677789. The reversal of 6677777 is 7777766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4977361 + 1700416 = 2231^2 + 1304^2 .

It is a cyclic number.

It is not a de Polignac number, because 6677777 - 2⁴ = 6677761 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (6677707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3338888 + 3338889.

It is an arithmetic number, because the mean of its divisors is an integer number (3338889).

Almost surely, 2^6677777 is an apocalyptic number.

It is an amenable number.

6677777 is a deficient number, since it is larger than the sum of its proper divisors (1).

6677777 is an equidigital number, since it uses as much as digits as its factorization.

6677777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 605052, while the sum is 47.

The square root of 6677777 is about 2584.1395086179. The cubic root of 6677777 is about 188.3116999890.

The spelling of 6677777 in words is "six million, six hundred seventy-seven thousand, seven hundred seventy-seven".