64224479 has 4 divisors (see below), whose sum is σ = 70063080. Its totient is φ = 58385880.

The previous prime is 64224469. The next prime is 64224493. The reversal of 64224479 is 97442246.

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 64224479 - 2⁴ = 64224463 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 (64224439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2919284 + ... + 2919305.

It is an arithmetic number, because the mean of its divisors is an integer number (17515770).

Almost surely, 2^64224479 is an apocalyptic number.

64224479 is a deficient number, since it is larger than the sum of its proper divisors (5838601).

64224479 is a wasteful number, since it uses less digits than its factorization.

64224479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5838600.

The product of its digits is 96768, while the sum is 38.

The square root of 64224479 is about 8014.0176565815. The cubic root of 64224479 is about 400.4671188709.

It can be divided in two parts, 6422 and 4479, that added together give a palindrome (10901).

The spelling of 64224479 in words is "sixty-four million, two hundred twenty-four thousand, four hundred seventy-nine".