6446594477 has 2 divisors, whose sum is σ = 6446594478. Its totient is φ = 6446594476.

The previous prime is 6446594459. The next prime is 6446594513. The reversal of 6446594477 is 7744956446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5928076036 + 518518441 = 76994^2 + 22771^2 .

It is a cyclic number.

It is not a de Polignac number, because 6446594477 - 2¹⁰ = 6446593453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6446594437) 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, 3223297238 + 3223297239.

It is an arithmetic number, because the mean of its divisors is an integer number (3223297239).

Almost surely, 2^6446594477 is an apocalyptic number.

It is an amenable number.

6446594477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6446594477 is an equidigital number, since it uses as much as digits as its factorization.

6446594477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 56.

The square root of 6446594477 is about 80290.6873616112. The cubic root of 6446594477 is about 1861.1303181910.

The spelling of 6446594477 in words is "six billion, four hundred forty-six million, five hundred ninety-four thousand, four hundred seventy-seven".