2663456 has 12 divisors (see below), whose sum is σ = 5243742. Its totient is φ = 1331712.

The previous prime is 2663431. The next prime is 2663459. The reversal of 2663456 is 6543662.

It can be written as a sum of positive squares in only one way, i.e., 1488400 + 1175056 = 1220^2 + 1084^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 83233 = 2663456 / (2 + 6 + 6 + 3 + 4 + 5 + 6).

It is a d-powerful number, because it can be written as 2¹⁷ + 6⁶ + 6⁶ + 3¹¹ + 4⁹ + 5⁹ + 6⁶ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41585 + ... + 41648.

2^2663456 is an apocalyptic number.

It is an amenable number.

2663456 is a deficient number, since it is larger than the sum of its proper divisors (2580286).

2663456 is an equidigital number, since it uses as much as digits as its factorization.

2663456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83243 (or 83235 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 2663456 is about 1632.0098038921. The cubic root of 2663456 is about 138.6165787212.

Subtracting from 2663456 its sum of digits (32), we obtain a square (2663424 = 1632²).

The spelling of 2663456 in words is "two million, six hundred sixty-three thousand, four hundred fifty-six".