2566663005 has 16 divisors (see below), whose sum is σ = 4147323264. Its totient is φ = 1355332800.

The previous prime is 2566662983. The next prime is 2566663007. The reversal of 2566663005 is 5003666652.

It is not a de Polignac number, because 2566663005 - 2²¹ = 2564565853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566663007) 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, 845569 + ... + 848598.

It is an arithmetic number, because the mean of its divisors is an integer number (259207704).

Almost surely, 2^2566663005 is an apocalyptic number.

It is an amenable number.

2566663005 is a deficient number, since it is larger than the sum of its proper divisors (1580660259).

2566663005 is a wasteful number, since it uses less digits than its factorization.

2566663005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694276.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 2566663005 is about 50662.2443738925. The cubic root of 2566663005 is about 1369.1665602293.

The spelling of 2566663005 in words is "two billion, five hundred sixty-six million, six hundred sixty-three thousand, five".