64044023 has 4 divisors (see below), whose sum is σ = 64060608. Its totient is φ = 64027440.

The previous prime is 64044017. The next prime is 64044037. The reversal of 64044023 is 32044046.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64044023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64044023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64044053) 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, 890 + ... + 11352.

It is an arithmetic number, because the mean of its divisors is an integer number (16015152).

Almost surely, 2^64044023 is an apocalyptic number.

64044023 is a deficient number, since it is larger than the sum of its proper divisors (16585).

64044023 is a wasteful number, since it uses less digits than its factorization.

64044023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16584.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 64044023 is about 8002.7509645121. The cubic root of 64044023 is about 400.0916935625.

Adding to 64044023 its sum of digits (23), we get a palindrome (64044046).

Adding to 64044023 its reverse (32044046), we get a palindrome (96088069).

The spelling of 64044023 in words is "sixty-four million, forty-four thousand, twenty-three".