6676565491 has 2 divisors, whose sum is σ = 6676565492. Its totient is φ = 6676565490.

The previous prime is 6676565459. The next prime is 6676565507. The reversal of 6676565491 is 1945656766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6676565491 - 2⁵ = 6676565459 is a prime.

It is a super-2 number, since 2×6676565491² = 89153053511224142162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6676565411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3338282745 + 3338282746.

It is an arithmetic number, because the mean of its divisors is an integer number (3338282746).

Almost surely, 2^6676565491 is an apocalyptic number.

6676565491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6676565491 is an equidigital number, since it uses as much as digits as its factorization.

6676565491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 55.

The square root of 6676565491 is about 81710.2532794998. The cubic root of 6676565491 is about 1883.0031121309.

It can be divided in two parts, 6676565 and 491, that added together give a square (6677056 = 2584²).

The spelling of 6676565491 in words is "six billion, six hundred seventy-six million, five hundred sixty-five thousand, four hundred ninety-one".