2223657 has 6 divisors (see below), whose sum is σ = 3211962. Its totient is φ = 1482432.

The previous prime is 2223631. The next prime is 2223671. The reversal of 2223657 is 7563222.

2223657 is a `hidden beast` number, since 2 + 2 + 2 + 3 + 657 = 666.

2223657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2223081 + 576 = 1491^2 + 24^2 .

It is not a de Polignac number, because 2223657 - 2¹⁴ = 2207273 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 2¹² + 2¹⁹ + 3² + 6⁸ + 5⁶ + 7 .

It is a self number, because there is not a number n which added to its sum of digits gives 2223657.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223607) 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 5 ways as a sum of consecutive naturals, for example, 123528 + ... + 123545.

It is an arithmetic number, because the mean of its divisors is an integer number (535327).

2^2223657 is an apocalyptic number.

It is an amenable number.

2223657 is a deficient number, since it is larger than the sum of its proper divisors (988305).

2223657 is a wasteful number, since it uses less digits than its factorization.

2223657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247079 (or 247076 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 2223657 is about 1491.1931464435. The cubic root of 2223657 is about 130.5236668223.

Adding to 2223657 its reverse (7563222), we get a palindrome (9786879).

The spelling of 2223657 in words is "two million, two hundred twenty-three thousand, six hundred fifty-seven".