6644141677 has 2 divisors, whose sum is σ = 6644141678. Its totient is φ = 6644141676.

The previous prime is 6644141659. The next prime is 6644141687. The reversal of 6644141677 is 7761414466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3937437001 + 2706704676 = 62749^2 + 52026^2 .

It is a cyclic number.

It is not a de Polignac number, because 6644141677 - 2⁷ = 6644141549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6644141627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3322070838 + 3322070839.

It is an arithmetic number, because the mean of its divisors is an integer number (3322070839).

Almost surely, 2^6644141677 is an apocalyptic number.

It is an amenable number.

6644141677 is a deficient number, since it is larger than the sum of its proper divisors (1).

6644141677 is an equidigital number, since it uses as much as digits as its factorization.

6644141677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 46.

The square root of 6644141677 is about 81511.6045541983. The cubic root of 6644141677 is about 1879.9499832966.

The spelling of 6644141677 in words is "six billion, six hundred forty-four million, one hundred forty-one thousand, six hundred seventy-seven".