2223655 has 8 divisors (see below), whose sum is σ = 3049632. Its totient is φ = 1524768.

The previous prime is 2223631. The next prime is 2223671. The reversal of 2223655 is 5563222.

2223655 = 378² + 379² + ... + 392².

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

It is not a de Polignac number, because 2223655 - 2⁵ = 2223623 is a prime.

It is a d-powerful number, because it can be written as 2⁶ + 2⁹ + 2¹⁸ + 3² + 6⁵ + 5² + 5⁹ .

It is a Duffinian number.

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, 31732 + ... + 31801.

It is an arithmetic number, because the mean of its divisors is an integer number (381204).

2^2223655 is an apocalyptic number.

2223655 is a deficient number, since it is larger than the sum of its proper divisors (825977).

2223655 is an equidigital number, since it uses as much as digits as its factorization.

2223655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63545.

The product of its digits is 3600, while the sum is 25.

The square root of 2223655 is about 1491.1924758394. The cubic root of 2223655 is about 130.5236276904.

Adding to 2223655 its reverse (5563222), we get a palindrome (7786877).

The spelling of 2223655 in words is "two million, two hundred twenty-three thousand, six hundred fifty-five".