64436343 has 4 divisors (see below), whose sum is σ = 85915128. Its totient is φ = 42957560.

The previous prime is 64436327. The next prime is 64436377. The reversal of 64436343 is 34363446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64436343 - 2⁴ = 64436327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64436843) 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, 10739388 + ... + 10739393.

It is an arithmetic number, because the mean of its divisors is an integer number (21478782).

Almost surely, 2^64436343 is an apocalyptic number.

64436343 is a deficient number, since it is larger than the sum of its proper divisors (21478785).

64436343 is a wasteful number, since it uses less digits than its factorization.

64436343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21478784.

The product of its digits is 62208, while the sum is 33.

The square root of 64436343 is about 8027.2251120795. The cubic root of 64436343 is about 400.9069897861.

Adding to 64436343 its reverse (34363446), we get a palindrome (98799789).

The spelling of 64436343 in words is "sixty-four million, four hundred thirty-six thousand, three hundred forty-three".