2606651317 has 4 divisors (see below), whose sum is σ = 2607156940. Its totient is φ = 2606145696.

The previous prime is 2606651309. The next prime is 2606651321. The reversal of 2606651317 is 7131566062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2419262596 + 187388721 = 49186^2 + 13689^2 .

It is a cyclic number.

It is not a de Polignac number, because 2606651317 - 2³ = 2606651309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606651417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244998 + ... + 255415.

It is an arithmetic number, because the mean of its divisors is an integer number (651789235).

Almost surely, 2^2606651317 is an apocalyptic number.

It is an amenable number.

2606651317 is a deficient number, since it is larger than the sum of its proper divisors (505623).

2606651317 is an equidigital number, since it uses as much as digits as its factorization.

2606651317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505622.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 2606651317 is about 51055.3750059678. The cubic root of 2606651317 is about 1376.2404351364.

The spelling of 2606651317 in words is "two billion, six hundred six million, six hundred fifty-one thousand, three hundred seventeen".