64227643 has 4 divisors (see below), whose sum is σ = 64244320. Its totient is φ = 64210968.

The previous prime is 64227623. The next prime is 64227697. The reversal of 64227643 is 34672246.

64227643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 64227643 - 2⁹ = 64227131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64227599 and 64227608.

It is not an unprimeable number, because it can be changed into a prime (64227623) 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 3 ways as a sum of consecutive naturals, for example, 718 + ... + 11356.

It is an arithmetic number, because the mean of its divisors is an integer number (16061080).

Almost surely, 2^64227643 is an apocalyptic number.

64227643 is a deficient number, since it is larger than the sum of its proper divisors (16677).

64227643 is a wasteful number, since it uses less digits than its factorization.

64227643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16676.

The product of its digits is 48384, while the sum is 34.

The square root of 64227643 is about 8014.2150582574. The cubic root of 64227643 is about 400.4736950610.

Adding to 64227643 its reverse (34672246), we get a palindrome (98899889).

The spelling of 64227643 in words is "sixty-four million, two hundred twenty-seven thousand, six hundred forty-three".