64223541 has 6 divisors (see below), whose sum is σ = 92767350. Its totient is φ = 42815688.

The previous prime is 64223539. The next prime is 64223561. The reversal of 64223541 is 14532246.

It can be written as a sum of positive squares in only one way, i.e., 60000516 + 4223025 = 7746^2 + 2055^2 .

It is not a de Polignac number, because 64223541 - 2¹ = 64223539 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64223561) 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, 3567966 + ... + 3567983.

It is an arithmetic number, because the mean of its divisors is an integer number (15461225).

Almost surely, 2^64223541 is an apocalyptic number.

It is an amenable number.

64223541 is a deficient number, since it is larger than the sum of its proper divisors (28543809).

64223541 is a wasteful number, since it uses less digits than its factorization.

64223541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7135955 (or 7135952 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 64223541 is about 8013.9591339113. The cubic root of 64223541 is about 400.4651692509.

Adding to 64223541 its reverse (14532246), we get a palindrome (78755787).

The spelling of 64223541 in words is "sixty-four million, two hundred twenty-three thousand, five hundred forty-one".