6676417421 has 2 divisors, whose sum is σ = 6676417422. Its totient is φ = 6676417420.

The previous prime is 6676417387. The next prime is 6676417469. The reversal of 6676417421 is 1247146766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5625750025 + 1050667396 = 75005^2 + 32414^2 .

It is a cyclic number.

It is not a de Polignac number, because 6676417421 - 2⁶ = 6676417357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6676417481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3338208710 + 3338208711.

It is an arithmetic number, because the mean of its divisors is an integer number (3338208711).

Almost surely, 2^6676417421 is an apocalyptic number.

It is an amenable number.

6676417421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6676417421 is an equidigital number, since it uses as much as digits as its factorization.

6676417421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

The square root of 6676417421 is about 81709.3472070362. The cubic root of 6676417421 is about 1882.9891918834.

The spelling of 6676417421 in words is "six billion, six hundred seventy-six million, four hundred seventeen thousand, four hundred twenty-one".