2606625805 has 24 divisors (see below), whose sum is σ = 3670876152. Its totient is φ = 1771564032.

The previous prime is 2606625803. The next prime is 2606625863. The reversal of 2606625805 is 5085266062.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8277129 + 2598348676 = 2877^2 + 50974^2 .

It is not a de Polignac number, because 2606625805 - 2¹ = 2606625803 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 (2606625803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19392 + ... + 74761.

It is an arithmetic number, because the mean of its divisors is an integer number (152953173).

Almost surely, 2^2606625805 is an apocalyptic number.

It is an amenable number.

2606625805 is a deficient number, since it is larger than the sum of its proper divisors (1064250347).

2606625805 is a wasteful number, since it uses less digits than its factorization.

2606625805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94285 (or 94278 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 2606625805 is about 51055.1251589887. The cubic root of 2606625805 is about 1376.2359452429.

The spelling of 2606625805 in words is "two billion, six hundred six million, six hundred twenty-five thousand, eight hundred five".