64415423 has 2 divisors, whose sum is σ = 64415424. Its totient is φ = 64415422.

The previous prime is 64415399. The next prime is 64415443. The reversal of 64415423 is 32451446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64415423 - 2⁶ = 64415359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64415443) 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, 32207711 + 32207712.

It is an arithmetic number, because the mean of its divisors is an integer number (32207712).

Almost surely, 2^64415423 is an apocalyptic number.

64415423 is a deficient number, since it is larger than the sum of its proper divisors (1).

64415423 is an equidigital number, since it uses as much as digits as its factorization.

64415423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 29.

The square root of 64415423 is about 8025.9219408115. The cubic root of 64415423 is about 400.8635987346.

Adding to 64415423 its reverse (32451446), we get a palindrome (96866869).

The spelling of 64415423 in words is "sixty-four million, four hundred fifteen thousand, four hundred twenty-three".