2566263886 has 16 divisors (see below), whose sum is σ = 4021452288. Its totient is φ = 1226777400.

The previous prime is 2566263881. The next prime is 2566263901. The reversal of 2566263886 is 6883626652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566263881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244200 + ... + 254491.

It is an arithmetic number, because the mean of its divisors is an integer number (251340768).

Almost surely, 2^2566263886 is an apocalyptic number.

2566263886 is a deficient number, since it is larger than the sum of its proper divisors (1455188402).

2566263886 is a wasteful number, since it uses less digits than its factorization.

2566263886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498807.

The product of its digits is 4976640, while the sum is 52.

The square root of 2566263886 is about 50658.3052026023. The cubic root of 2566263886 is about 1369.0955875675.

The spelling of 2566263886 in words is "two billion, five hundred sixty-six million, two hundred sixty-three thousand, eight hundred eighty-six".