326564197 has 2 divisors, whose sum is σ = 326564198. Its totient is φ = 326564196.

The previous prime is 326564159. The next prime is 326564291. The reversal of 326564197 is 791465623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175986756 + 150577441 = 13266^2 + 12271^2 .

It is a cyclic number.

It is not a de Polignac number, because 326564197 - 2¹¹ = 326562149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326564597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163282098 + 163282099.

It is an arithmetic number, because the mean of its divisors is an integer number (163282099).

Almost surely, 2^326564197 is an apocalyptic number.

It is an amenable number.

326564197 is a deficient number, since it is larger than the sum of its proper divisors (1).

326564197 is an equidigital number, since it uses as much as digits as its factorization.

326564197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 326564197 is about 18071.0873220180. The cubic root of 326564197 is about 688.6356833469.

The spelling of 326564197 in words is "three hundred twenty-six million, five hundred sixty-four thousand, one hundred ninety-seven".