6557230789 has 2 divisors, whose sum is σ = 6557230790. Its totient is φ = 6557230788.

The previous prime is 6557230787. The next prime is 6557230831. The reversal of 6557230789 is 9870327556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3636693025 + 2920537764 = 60305^2 + 54042^2 .

It is a cyclic number.

It is not a de Polignac number, because 6557230789 - 2¹ = 6557230787 is a prime.

Together with 6557230787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6557230787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278615394 + 3278615395.

It is an arithmetic number, because the mean of its divisors is an integer number (3278615395).

Almost surely, 2^6557230789 is an apocalyptic number.

It is an amenable number.

6557230789 is a deficient number, since it is larger than the sum of its proper divisors (1).

6557230789 is an equidigital number, since it uses as much as digits as its factorization.

6557230789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The square root of 6557230789 is about 80976.7299228612. The cubic root of 6557230789 is about 1871.7168775695.

The spelling of 6557230789 in words is "six billion, five hundred fifty-seven million, two hundred thirty thousand, seven hundred eighty-nine".