2605806266 has 8 divisors (see below), whose sum is σ = 4467096480. Its totient is φ = 1116774108.

The previous prime is 2605806263. The next prime is 2605806293. The reversal of 2605806266 is 6626085062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2605806263) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 93064496 + ... + 93064523.

It is an arithmetic number, because the mean of its divisors is an integer number (558387060).

Almost surely, 2^2605806266 is an apocalyptic number.

2605806266 is a deficient number, since it is larger than the sum of its proper divisors (1861290214).

2605806266 is a wasteful number, since it uses less digits than its factorization.

2605806266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186129028.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 2605806266 is about 51047.0985071630. The cubic root of 2605806266 is about 1376.0916978084.

The spelling of 2605806266 in words is "two billion, six hundred five million, eight hundred six thousand, two hundred sixty-six".