2663423 has 16 divisors (see below), whose sum is σ = 3234816. Its totient is φ = 2143680.

The previous prime is 2663393. The next prime is 2663429. The reversal of 2663423 is 3243662.

It is a Cunningham number, because it is equal to 1632²-1.

It is not a de Polignac number, because 2663423 - 2⁶ = 2663359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2663392 and 2663401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11315 + ... + 11547.

It is an arithmetic number, because the mean of its divisors is an integer number (202176).

2^2663423 is an apocalyptic number.

2663423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2663423 is a deficient number, since it is larger than the sum of its proper divisors (571393).

2663423 is a wasteful number, since it uses less digits than its factorization.

2663423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its digits is 5184, while the sum is 26.

The square root of 2663423 is about 1631.9996936274. Note that the first 3 decimals coincide. The cubic root of 2663423 is about 138.6160062361.

The spelling of 2663423 in words is "two million, six hundred sixty-three thousand, four hundred twenty-three".