22648765 has 8 divisors (see below), whose sum is σ = 27296568. Its totient is φ = 18040320.

The previous prime is 22648763. The next prime is 22648781. The reversal of 22648765 is 56784622.

It can be written as a sum of positive squares in 4 ways, for example, as 10201 + 22638564 = 101^2 + 4758^2 .

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

It is not a de Polignac number, because 22648765 - 2¹ = 22648763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22648763) 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, 8556 + ... + 10885.

It is an arithmetic number, because the mean of its divisors is an integer number (3412071).

Almost surely, 2^22648765 is an apocalyptic number.

It is an amenable number.

22648765 is a deficient number, since it is larger than the sum of its proper divisors (4647803).

22648765 is a wasteful number, since it uses less digits than its factorization.

22648765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19679.

The product of its digits is 161280, while the sum is 40.

The square root of 22648765 is about 4759.0718632944. The cubic root of 22648765 is about 282.9316345242.

The spelling of 22648765 in words is "twenty-two million, six hundred forty-eight thousand, seven hundred sixty-five".