22316645 has 8 divisors (see below), whose sum is σ = 28840056. Its totient is φ = 16479936.

The previous prime is 22316641. The next prime is 22316653. The reversal of 22316645 is 54661322.

It can be written as a sum of positive squares in 4 ways, for example, as 2540836 + 19775809 = 1594^2 + 4447^2 .

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 22316645 - 2² = 22316641 is a prime.

It is a super-3 number, since 3×22316645³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22316641) 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 7 ways as a sum of consecutive naturals, for example, 171602 + ... + 171731.

It is an arithmetic number, because the mean of its divisors is an integer number (3605007).

Almost surely, 2^22316645 is an apocalyptic number.

It is an amenable number.

22316645 is a deficient number, since it is larger than the sum of its proper divisors (6523411).

22316645 is a wasteful number, since it uses less digits than its factorization.

22316645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343351.

The product of its digits is 8640, while the sum is 29.

The square root of 22316645 is about 4724.0496398747. The cubic root of 22316645 is about 281.5418553885.

Adding to 22316645 its reverse (54661322), we get a palindrome (76977967).

The spelling of 22316645 in words is "twenty-two million, three hundred sixteen thousand, six hundred forty-five".