2266623 has 10 divisors (see below), whose sum is σ = 3386064. Its totient is φ = 1511028.

The previous prime is 2266619. The next prime is 2266631. The reversal of 2266623 is 3266622.

It is a happy number.

It is not a de Polignac number, because 2266623 - 2² = 2266619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2266633) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13911 + ... + 14072.

2^2266623 is an apocalyptic number.

2266623 is a deficient number, since it is larger than the sum of its proper divisors (1119441).

2266623 is an equidigital number, since it uses as much as digits as its factorization.

2266623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27995 (or 27986 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 2266623 is about 1505.5308034046. The cubic root of 2266623 is about 131.3589788759.

Subtracting 2266623 from its reverse (3266622), we obtain a palindrome (999999).

The spelling of 2266623 in words is "two million, two hundred sixty-six thousand, six hundred twenty-three".