64224565 has 4 divisors (see below), whose sum is σ = 77069484. Its totient is φ = 51379648.

The previous prime is 64224547. The next prime is 64224569. The reversal of 64224565 is 56542246.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29095236 + 35129329 = 5394^2 + 5927^2 .

It is a cyclic number.

It is not a de Polignac number, because 64224565 - 2¹¹ = 64222517 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 64224565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64224569) 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, 6422452 + ... + 6422461.

It is an arithmetic number, because the mean of its divisors is an integer number (19267371).

Almost surely, 2^64224565 is an apocalyptic number.

It is an amenable number.

64224565 is a deficient number, since it is larger than the sum of its proper divisors (12844919).

64224565 is a wasteful number, since it uses less digits than its factorization.

64224565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12844918.

The product of its digits is 57600, while the sum is 34.

The square root of 64224565 is about 8014.0230221781. The cubic root of 64224565 is about 400.4672976197.

The spelling of 64224565 in words is "sixty-four million, two hundred twenty-four thousand, five hundred sixty-five".