13222657 has 8 divisors (see below), whose sum is σ = 15134336. Its totient is φ = 11316672.

The previous prime is 13222639. The next prime is 13222661. The reversal of 13222657 is 75622231.

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 13222657 - 2¹¹ = 13220609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13222687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6553 + ... + 8329.

It is an arithmetic number, because the mean of its divisors is an integer number (1891792).

Almost surely, 2^13222657 is an apocalyptic number.

It is an amenable number.

13222657 is a deficient number, since it is larger than the sum of its proper divisors (1911679).

13222657 is a wasteful number, since it uses less digits than its factorization.

13222657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847.

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

The square root of 13222657 is about 3636.2971550741. The cubic root of 13222657 is about 236.4682899795.

Adding to 13222657 its reverse (75622231), we get a palindrome (88844888).

The spelling of 13222657 in words is "thirteen million, two hundred twenty-two thousand, six hundred fifty-seven".