2600506065 has 64 divisors (see below), whose sum is σ = 4478976000. Its totient is φ = 1283804160.

The previous prime is 2600506061. The next prime is 2600506087. The reversal of 2600506065 is 5606050062.

It is not a de Polignac number, because 2600506065 - 2² = 2600506061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2600506061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5211186 + ... + 5211684.

It is an arithmetic number, because the mean of its divisors is an integer number (69984000).

Almost surely, 2^2600506065 is an apocalyptic number.

It is an amenable number.

2600506065 is a deficient number, since it is larger than the sum of its proper divisors (1878469935).

2600506065 is a wasteful number, since it uses less digits than its factorization.

2600506065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2600506065 is about 50995.1572700781. The cubic root of 2600506065 is about 1375.1580759309.

The spelling of 2600506065 in words is "two billion, six hundred million, five hundred six thousand, sixty-five".