2663559 has 6 divisors (see below), whose sum is σ = 3847376. Its totient is φ = 1775700.

The previous prime is 2663539. The next prime is 2663567. The reversal of 2663559 is 9553662.

It is not a de Polignac number, because 2663559 - 2⁵ = 2663527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663539) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147967 + ... + 147984.

2^2663559 is an apocalyptic number.

2663559 is a deficient number, since it is larger than the sum of its proper divisors (1183817).

2663559 is a wasteful number, since it uses less digits than its factorization.

2663559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295957 (or 295954 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 2663559 is about 1632.0413597700. The cubic root of 2663559 is about 138.6183655379.

The spelling of 2663559 in words is "two million, six hundred sixty-three thousand, five hundred fifty-nine".