2273663 has 4 divisors (see below), whose sum is σ = 2598480. Its totient is φ = 1948848.

The previous prime is 2273659. The next prime is 2273669. The reversal of 2273663 is 3663722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3663722 = 2 ⋅1831861.

It is a cyclic number.

It is not a de Polignac number, because 2273663 - 2² = 2273659 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁹ + 7⁴ + 3⁴ + 6² + 6⁸ + 3¹⁰ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2273669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162398 + ... + 162411.

It is an arithmetic number, because the mean of its divisors is an integer number (649620).

2^2273663 is an apocalyptic number.

2273663 is a deficient number, since it is larger than the sum of its proper divisors (324817).

2273663 is an equidigital number, since it uses as much as digits as its factorization.

2273663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324816.

The product of its digits is 9072, while the sum is 29.

The square root of 2273663 is about 1507.8670365785. The cubic root of 2273663 is about 131.4948361160.

The spelling of 2273663 in words is "two million, two hundred seventy-three thousand, six hundred sixty-three".