64623243 has 8 divisors (see below), whose sum is σ = 87053008. Its totient is φ = 42637824.

The previous prime is 64623197. The next prime is 64623259. The reversal of 64623243 is 34232646.

It is a happy number.

64623243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 64623243 - 2⁶ = 64623179 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 64623243.

It is not an unprimeable number, because it can be changed into a prime (64623743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110746 + ... + 111327.

It is an arithmetic number, because the mean of its divisors is an integer number (10881626).

Almost surely, 2^64623243 is an apocalyptic number.

64623243 is a deficient number, since it is larger than the sum of its proper divisors (22429765).

64623243 is a wasteful number, since it uses less digits than its factorization.

64623243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222173.

The product of its digits is 20736, while the sum is 30.

The square root of 64623243 is about 8038.8583144623. The cubic root of 64623243 is about 401.2942308167.

Adding to 64623243 its reverse (34232646), we get a palindrome (98855889).

The spelling of 64623243 in words is "sixty-four million, six hundred twenty-three thousand, two hundred forty-three".