64535423 has 2 divisors, whose sum is σ = 64535424. Its totient is φ = 64535422.

The previous prime is 64535399. The next prime is 64535453. The reversal of 64535423 is 32453546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64535423 - 2²² = 60341119 is a prime.

It is equal to p_3814871 and since 64535423 and 3814871 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64535423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64535453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32267711 + 32267712.

It is an arithmetic number, because the mean of its divisors is an integer number (32267712).

Almost surely, 2^64535423 is an apocalyptic number.

64535423 is a deficient number, since it is larger than the sum of its proper divisors (1).

64535423 is an equidigital number, since it uses as much as digits as its factorization.

64535423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 32.

The square root of 64535423 is about 8033.3942390499. The cubic root of 64535423 is about 401.1123683077.

Adding to 64535423 its reverse (32453546), we get a palindrome (96988969).

The spelling of 64535423 in words is "sixty-four million, five hundred thirty-five thousand, four hundred twenty-three".