2613706649 has 4 divisors (see below), whose sum is σ = 2652717264. Its totient is φ = 2574696036.

The previous prime is 2613706639. The next prime is 2613706651. The reversal of 2613706649 is 9466073162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2613706649 - 2⁸ = 2613706393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2613706619) 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, 19505207 + ... + 19505340.

It is an arithmetic number, because the mean of its divisors is an integer number (663179316).

Almost surely, 2^2613706649 is an apocalyptic number.

It is an amenable number.

2613706649 is a deficient number, since it is larger than the sum of its proper divisors (39010615).

2613706649 is an equidigital number, since it uses as much as digits as its factorization.

2613706649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39010614.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 2613706649 is about 51124.4232143503. The cubic root of 2613706649 is about 1377.4809905117.

The spelling of 2613706649 in words is "two billion, six hundred thirteen million, seven hundred six thousand, six hundred forty-nine".