6464528197 has 2 divisors, whose sum is σ = 6464528198. Its totient is φ = 6464528196.

The previous prime is 6464528153. The next prime is 6464528221. The reversal of 6464528197 is 7918254646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4363130916 + 2101397281 = 66054^2 + 45841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6464528197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6464528117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232264098 + 3232264099.

It is an arithmetic number, because the mean of its divisors is an integer number (3232264099).

Almost surely, 2^6464528197 is an apocalyptic number.

It is an amenable number.

6464528197 is a deficient number, since it is larger than the sum of its proper divisors (1).

6464528197 is an equidigital number, since it uses as much as digits as its factorization.

6464528197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 52.

The square root of 6464528197 is about 80402.2897497329. The cubic root of 6464528197 is about 1862.8545405690.

The spelling of 6464528197 in words is "six billion, four hundred sixty-four million, five hundred twenty-eight thousand, one hundred ninety-seven".