2663239 has 4 divisors (see below), whose sum is σ = 2779056. Its totient is φ = 2547424.

The previous prime is 2663231. The next prime is 2663251. The reversal of 2663239 is 9323662.

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

It is a cyclic number.

It is not a de Polignac number, because 2663239 - 2³ = 2663231 is a prime.

It is a super-2 number, since 2×2663239² = 14185683942242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁵ + 6⁵ + 3 + 2²¹ + 3⁹ + 9⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2663239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57874 + ... + 57919.

It is an arithmetic number, because the mean of its divisors is an integer number (694764).

2^2663239 is an apocalyptic number.

2663239 is a deficient number, since it is larger than the sum of its proper divisors (115817).

2663239 is a wasteful number, since it uses less digits than its factorization.

2663239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115816.

The product of its digits is 11664, while the sum is 31.

The square root of 2663239 is about 1631.9433200942. The cubic root of 2663239 is about 138.6128141118.

The spelling of 2663239 in words is "two million, six hundred sixty-three thousand, two hundred thirty-nine".