2606650605 has 64 divisors (see below), whose sum is σ = 5207569920. Its totient is φ = 1227460608.

The previous prime is 2606650591. The next prime is 2606650609. The reversal of 2606650605 is 5060566062.

It is not a de Polignac number, because 2606650605 - 2⁸ = 2606650349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2606650605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606650609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8077 + ... + 72653.

It is an arithmetic number, because the mean of its divisors is an integer number (81368280).

Almost surely, 2^2606650605 is an apocalyptic number.

It is an amenable number.

2606650605 is a deficient number, since it is larger than the sum of its proper divisors (2600919315).

2606650605 is a wasteful number, since it uses less digits than its factorization.

2606650605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64627 (or 64621 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 2606650605 is about 51055.3680331461. The cubic root of 2606650605 is about 1376.2403098309.

The spelling of 2606650605 in words is "two billion, six hundred six million, six hundred fifty thousand, six hundred five".