22345645 has 16 divisors (see below), whose sum is σ = 30764160. Its totient is φ = 15263424.

The previous prime is 22345643. The next prime is 22345649. The reversal of 22345645 is 54654322.

It is a cyclic number.

It is not a de Polignac number, because 22345645 - 2¹ = 22345643 is a prime.

It is a super-3 number, since 3×22345645³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22345643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9166 + ... + 11344.

It is an arithmetic number, because the mean of its divisors is an integer number (1922760).

Almost surely, 2^22345645 is an apocalyptic number.

It is an amenable number.

22345645 is a deficient number, since it is larger than the sum of its proper divisors (8418515).

22345645 is a wasteful number, since it uses less digits than its factorization.

22345645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484.

The product of its digits is 28800, while the sum is 31.

The square root of 22345645 is about 4727.1180437979. The cubic root of 22345645 is about 281.6637551294.

Adding to 22345645 its reverse (54654322), we get a palindrome (76999967).

The spelling of 22345645 in words is "twenty-two million, three hundred forty-five thousand, six hundred forty-five".