2564650266 has 16 divisors (see below), whose sum is σ = 5130216000. Its totient is φ = 854730848.

The previous prime is 2564650241. The next prime is 2564650279. The reversal of 2564650266 is 6620564652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435 + ... + 71633.

It is an arithmetic number, because the mean of its divisors is an integer number (320638500).

Almost surely, 2^2564650266 is an apocalyptic number.

2564650266 is an abundant number, since it is smaller than the sum of its proper divisors (2565565734).

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

2564650266 is a wasteful number, since it uses less digits than its factorization.

2564650266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76293.

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 2564650266 is about 50642.3761883267. The cubic root of 2564650266 is about 1368.8085732779.

The spelling of 2564650266 in words is "two billion, five hundred sixty-four million, six hundred fifty thousand, two hundred sixty-six".