22245645 has 8 divisors (see below), whose sum is σ = 35593056. Its totient is φ = 11864336.

The previous prime is 22245611. The next prime is 22245659. The reversal of 22245645 is 54654222.

It is a happy number.

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 22245645 - 2⁹ = 22245133 is a prime.

It is a super-3 number, since 3×22245645³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741507 + ... + 741536.

It is an arithmetic number, because the mean of its divisors is an integer number (4449132).

Almost surely, 2^22245645 is an apocalyptic number.

It is an amenable number.

22245645 is a deficient number, since it is larger than the sum of its proper divisors (13347411).

22245645 is a wasteful number, since it uses less digits than its factorization.

22245645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483051.

The product of its digits is 19200, while the sum is 30.

The square root of 22245645 is about 4716.5289143606. The cubic root of 22245645 is about 281.2429647623.

Adding to 22245645 its reverse (54654222), we get a palindrome (76899867).

The spelling of 22245645 in words is "twenty-two million, two hundred forty-five thousand, six hundred forty-five".