2663005 has 4 divisors (see below), whose sum is σ = 3195612. Its totient is φ = 2130400.

The previous prime is 2662981. The next prime is 2663027. The reversal of 2663005 is 5003662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1159929 + 1503076 = 1077^2 + 1226^2 .

It is not a de Polignac number, because 2663005 - 2¹⁵ = 2630237 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266296 + ... + 266305.

It is an arithmetic number, because the mean of its divisors is an integer number (798903).

2^2663005 is an apocalyptic number.

It is an amenable number.

2663005 is a deficient number, since it is larger than the sum of its proper divisors (532607).

2663005 is an equidigital number, since it uses as much as digits as its factorization.

2663005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532606.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2663005 is about 1631.8716248529. The cubic root of 2663005 is about 138.6087543499.

Adding to 2663005 its reverse (5003662), we get a palindrome (7666667).

The spelling of 2663005 in words is "two million, six hundred sixty-three thousand, five".