64469543 has 4 divisors (see below), whose sum is σ = 64531368. Its totient is φ = 64407720.

The previous prime is 64469519. The next prime is 64469557. The reversal of 64469543 is 34596446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34596446 = 2 ⋅17298223.

It is a cyclic number.

It is not a de Polignac number, because 64469543 - 2⁶ = 64469479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64469543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64469563) 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 in 3 ways as a sum of consecutive naturals, for example, 29321 + ... + 31442.

It is an arithmetic number, because the mean of its divisors is an integer number (16132842).

Almost surely, 2^64469543 is an apocalyptic number.

64469543 is a deficient number, since it is larger than the sum of its proper divisors (61825).

64469543 is a wasteful number, since it uses less digits than its factorization.

64469543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61824.

The product of its digits is 311040, while the sum is 41.

The square root of 64469543 is about 8029.2928082117. The cubic root of 64469543 is about 400.9758320271.

The spelling of 64469543 in words is "sixty-four million, four hundred sixty-nine thousand, five hundred forty-three".