2663254566 has 60 divisors (see below), whose sum is σ = 6941996028. Its totient is φ = 760927608.

The previous prime is 2663254553. The next prime is 2663254591. The reversal of 2663254566 is 6654523662.

2663254566 is a `hidden beast` number, since 2 + 6 + 6 + 32 + 54 + 566 = 666.

2663254566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 159816 + ... + 175691.

Almost surely, 2^2663254566 is an apocalyptic number.

2663254566 is an abundant number, since it is smaller than the sum of its proper divisors (4278741462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2663254566 is a wasteful number, since it uses less digits than its factorization.

2663254566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335535 (or 335519 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The square root of 2663254566 is about 51606.7298518323. The cubic root of 2663254566 is about 1386.1308416423.

The spelling of 2663254566 in words is "two billion, six hundred sixty-three million, two hundred fifty-four thousand, five hundred sixty-six".