64571323 has 2 divisors, whose sum is σ = 64571324. Its totient is φ = 64571322.

The previous prime is 64571293. The next prime is 64571363. The reversal of 64571323 is 32317546.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64571323 is a prime.

It is equal to p_3816832 and since 64571323 and 3816832 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64571363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32285661 + 32285662.

It is an arithmetic number, because the mean of its divisors is an integer number (32285662).

Almost surely, 2^64571323 is an apocalyptic number.

64571323 is a deficient number, since it is larger than the sum of its proper divisors (1).

64571323 is an equidigital number, since it uses as much as digits as its factorization.

64571323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 64571323 is about 8035.6283512865. The cubic root of 64571323 is about 401.1867319364.

Adding to 64571323 its reverse (32317546), we get a palindrome (96888869).

The spelling of 64571323 in words is "sixty-four million, five hundred seventy-one thousand, three hundred twenty-three".