6544008997 has 2 divisors, whose sum is σ = 6544008998. Its totient is φ = 6544008996.

The previous prime is 6544008983. The next prime is 6544009037. The reversal of 6544008997 is 7998004456.

It is a happy number.

6544008997 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6455479716 + 88529281 = 80346^2 + 9409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6544008997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6544008697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272004498 + 3272004499.

It is an arithmetic number, because the mean of its divisors is an integer number (3272004499).

Almost surely, 2^6544008997 is an apocalyptic number.

It is an amenable number.

6544008997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544008997 is an equidigital number, since it uses as much as digits as its factorization.

6544008997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 6544008997 is about 80895.0492737349. The cubic root of 6544008997 is about 1870.4580075771.

The spelling of 6544008997 in words is "six billion, five hundred forty-four million, eight thousand, nine hundred ninety-seven".