64318443 has 16 divisors (see below), whose sum is σ = 99192576. Its totient is φ = 36309600.

The previous prime is 64318421. The next prime is 64318447. The reversal of 64318443 is 34481346.

It is a happy number.

It is not a de Polignac number, because 64318443 - 2⁶ = 64318379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64318447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16708 + ... + 20193.

It is an arithmetic number, because the mean of its divisors is an integer number (6199536).

Almost surely, 2^64318443 is an apocalyptic number.

64318443 is a deficient number, since it is larger than the sum of its proper divisors (34874133).

64318443 is a wasteful number, since it uses less digits than its factorization.

64318443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36994.

The product of its digits is 27648, while the sum is 33.

The square root of 64318443 is about 8019.8779915906. The cubic root of 64318443 is about 400.6623256233.

Adding to 64318443 its reverse (34481346), we get a palindrome (98799789).

The spelling of 64318443 in words is "sixty-four million, three hundred eighteen thousand, four hundred forty-three".