64404543 has 8 divisors (see below), whose sum is σ = 98140288. Its totient is φ = 36802584.

The previous prime is 64404533. The next prime is 64404581. The reversal of 64404543 is 34540446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64404543 - 2⁶ = 64404479 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 64404543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64404533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533421 + ... + 1533462.

It is an arithmetic number, because the mean of its divisors is an integer number (12267536).

Almost surely, 2^64404543 is an apocalyptic number.

64404543 is a deficient number, since it is larger than the sum of its proper divisors (33735745).

64404543 is a wasteful number, since it uses less digits than its factorization.

64404543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066893.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 64404543 is about 8025.2441084368. The cubic root of 64404543 is about 400.8410283556.

Adding to 64404543 its reverse (34540446), we get a palindrome (98944989).

The spelling of 64404543 in words is "sixty-four million, four hundred four thousand, five hundred forty-three".