64244227 has 4 divisors (see below), whose sum is σ = 64277920. Its totient is φ = 64210536.

The previous prime is 64244197. The next prime is 64244233. The reversal of 64244227 is 72244246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72244246 = 2 ⋅36122123.

It is a cyclic number.

It is not a de Polignac number, because 64244227 - 2¹¹ = 64242179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64244237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13803 + ... + 17860.

It is an arithmetic number, because the mean of its divisors is an integer number (16069480).

Almost surely, 2^64244227 is an apocalyptic number.

64244227 is a deficient number, since it is larger than the sum of its proper divisors (33693).

64244227 is a wasteful number, since it uses less digits than its factorization.

64244227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33692.

The product of its digits is 21504, while the sum is 31.

The square root of 64244227 is about 8015.2496530052. The cubic root of 64244227 is about 400.5081604091.

The spelling of 64244227 in words is "sixty-four million, two hundred forty-four thousand, two hundred twenty-seven".