13222765 has 8 divisors (see below), whose sum is σ = 16702560. Its totient is φ = 10021392.

The previous prime is 13222763. The next prime is 13222777. The reversal of 13222765 is 56722231.

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

It is a cyclic number.

It is not a de Polignac number, because 13222765 - 2¹ = 13222763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222763) 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, 69499 + ... + 69688.

It is an arithmetic number, because the mean of its divisors is an integer number (2087820).

Almost surely, 2^13222765 is an apocalyptic number.

It is an amenable number.

13222765 is a deficient number, since it is larger than the sum of its proper divisors (3479795).

13222765 is a wasteful number, since it uses less digits than its factorization.

13222765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139211.

The product of its digits is 5040, while the sum is 28.

The square root of 13222765 is about 3636.3120053153. The cubic root of 13222765 is about 236.4689337862.

Adding to 13222765 its reverse (56722231), we get a palindrome (69944996).

It can be divided in two parts, 13 and 222765, that added together give a triangular number (222778 = T₆₆₇).

The spelling of 13222765 in words is "thirteen million, two hundred twenty-two thousand, seven hundred sixty-five".