6604212409 has 2 divisors, whose sum is σ = 6604212410. Its totient is φ = 6604212408.

The previous prime is 6604212389. The next prime is 6604212421. The reversal of 6604212409 is 9042124066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6377619600 + 226592809 = 79860^2 + 15053^2 .

It is a cyclic number.

It is not a de Polignac number, because 6604212409 - 2⁷ = 6604212281 is a prime.

It is not a weakly prime, because it can be changed into another prime (6604212449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302106204 + 3302106205.

It is an arithmetic number, because the mean of its divisors is an integer number (3302106205).

Almost surely, 2^6604212409 is an apocalyptic number.

It is an amenable number.

6604212409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6604212409 is an equidigital number, since it uses as much as digits as its factorization.

6604212409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 6604212409 is about 81266.3054961895. The cubic root of 6604212409 is about 1876.1764382656.

The spelling of 6604212409 in words is "six billion, six hundred four million, two hundred twelve thousand, four hundred nine".