2606812081 has 4 divisors (see below), whose sum is σ = 2645719792. Its totient is φ = 2567904372.

The previous prime is 2606812069. The next prime is 2606812093. The reversal of 2606812081 is 1802186062.

2606812081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (2606812069) and next prime (2606812093).

It is a cyclic number.

It is not a de Polignac number, because 2606812081 - 2¹¹ = 2606810033 is a prime.

It is a super-2 number, since 2×2606812081² = 13590938451295101122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2606812031) 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, 19453755 + ... + 19453888.

It is an arithmetic number, because the mean of its divisors is an integer number (661429948).

Almost surely, 2^2606812081 is an apocalyptic number.

It is an amenable number.

2606812081 is a deficient number, since it is larger than the sum of its proper divisors (38907711).

2606812081 is an equidigital number, since it uses as much as digits as its factorization.

2606812081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38907710.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 2606812081 is about 51056.9493898725. The cubic root of 2606812081 is about 1376.2687275497.

The spelling of 2606812081 in words is "two billion, six hundred six million, eight hundred twelve thousand, eighty-one".