2611006609 has 4 divisors (see below), whose sum is σ = 2616018660. Its totient is φ = 2605994560.

The previous prime is 2611006603. The next prime is 2611006633. The reversal of 2611006609 is 9066001162.

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 581774400 + 2029232209 = 24120^2 + 45047^2 .

It is a cyclic number.

It is not a de Polignac number, because 2611006609 - 2¹³ = 2610998417 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2611006603) 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, 2505244 + ... + 2506285.

It is an arithmetic number, because the mean of its divisors is an integer number (654004665).

Almost surely, 2^2611006609 is an apocalyptic number.

It is an amenable number.

2611006609 is a deficient number, since it is larger than the sum of its proper divisors (5012051).

2611006609 is an equidigital number, since it uses as much as digits as its factorization.

2611006609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012050.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2611006609 is about 51098.0098340434. The cubic root of 2611006609 is about 1377.0065002303.

The spelling of 2611006609 in words is "two billion, six hundred eleven million, six thousand, six hundred nine".