64223533 has 6 divisors (see below), whose sum is σ = 70592942. Its totient is φ = 58384920.

The previous prime is 64223503. The next prime is 64223539. The reversal of 64223533 is 33532246.

It can be written as a sum of positive squares in only one way, i.e., 53187849 + 11035684 = 7293^2 + 3322^2 .

It is not a de Polignac number, because 64223533 - 2¹⁷ = 64092461 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 (64223539) 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 5 ways as a sum of consecutive naturals, for example, 265266 + ... + 265507.

Almost surely, 2^64223533 is an apocalyptic number.

It is an amenable number.

64223533 is a deficient number, since it is larger than the sum of its proper divisors (6369409).

64223533 is a wasteful number, since it uses less digits than its factorization.

64223533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530795 (or 530784 counting only the distinct ones).

The product of its digits is 12960, while the sum is 28.

The square root of 64223533 is about 8013.9586347822. The cubic root of 64223533 is about 400.4651526229.

Adding to 64223533 its reverse (33532246), we get a palindrome (97755779).

The spelling of 64223533 in words is "sixty-four million, two hundred twenty-three thousand, five hundred thirty-three".