2600851065 has 16 divisors (see below), whose sum is σ = 4211500608. Its totient is φ = 1370407616.

The previous prime is 2600851061. The next prime is 2600851067. The reversal of 2600851065 is 5601580062.

It is a cyclic number.

It is not a de Polignac number, because 2600851065 - 2² = 2600851061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2600851061) 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 15 ways as a sum of consecutive naturals, for example, 1043274 + ... + 1045763.

It is an arithmetic number, because the mean of its divisors is an integer number (263218788).

Almost surely, 2^2600851065 is an apocalyptic number.

It is an amenable number.

2600851065 is a deficient number, since it is larger than the sum of its proper divisors (1610649543).

2600851065 is a wasteful number, since it uses less digits than its factorization.

2600851065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089128.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 2600851065 is about 50998.5398320383. The cubic root of 2600851065 is about 1375.2188857048.

The spelling of 2600851065 in words is "two billion, six hundred million, eight hundred fifty-one thousand, sixty-five".