64023543 has 6 divisors (see below), whose sum is σ = 92478464. Its totient is φ = 42682356.

The previous prime is 64023529. The next prime is 64023569. The reversal of 64023543 is 34532046.

It is not a de Polignac number, because 64023543 - 2⁴ = 64023527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64023143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3556855 + ... + 3556872.

Almost surely, 2^64023543 is an apocalyptic number.

64023543 is a deficient number, since it is larger than the sum of its proper divisors (28454921).

64023543 is a wasteful number, since it uses less digits than its factorization.

64023543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7113733 (or 7113730 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 64023543 is about 8001.4713022044. The cubic root of 64023543 is about 400.0490419037.

Adding to 64023543 its reverse (34532046), we get a palindrome (98555589).

The spelling of 64023543 in words is "sixty-four million, twenty-three thousand, five hundred forty-three".