64144223 has 8 divisors (see below), whose sum is σ = 75358416. Its totient is φ = 53827200.

The previous prime is 64144219. The next prime is 64144343. The reversal of 64144223 is 32244146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64144223 - 2² = 64144219 is a prime.

It is a super-2 number, since 2×64144223² = 8228962688547458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64144192 and 64144201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64144523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224138 + ... + 224423.

It is an arithmetic number, because the mean of its divisors is an integer number (9419802).

Almost surely, 2^64144223 is an apocalyptic number.

64144223 is a deficient number, since it is larger than the sum of its proper divisors (11214193).

64144223 is a wasteful number, since it uses less digits than its factorization.

64144223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448585.

The product of its digits is 4608, while the sum is 26.

The square root of 64144223 is about 8009.0088650219. The cubic root of 64144223 is about 400.3002391681.

Adding to 64144223 its reverse (32244146), we get a palindrome (96388369).

The spelling of 64144223 in words is "sixty-four million, one hundred forty-four thousand, two hundred twenty-three".