2606035561 has 4 divisors (see below), whose sum is σ = 2613418452. Its totient is φ = 2598652672.

The previous prime is 2606035559. The next prime is 2606035567. The reversal of 2606035561 is 1655306062.

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 612859536 + 1993176025 = 24756^2 + 44645^2 .

It is a cyclic number.

It is not a de Polignac number, because 2606035561 - 2¹ = 2606035559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2606035567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3690916 + ... + 3691621.

It is an arithmetic number, because the mean of its divisors is an integer number (653354613).

Almost surely, 2^2606035561 is an apocalyptic number.

It is an amenable number.

2606035561 is a deficient number, since it is larger than the sum of its proper divisors (7382891).

2606035561 is an equidigital number, since it uses as much as digits as its factorization.

2606035561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382890.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 2606035561 is about 51049.3443738507. The cubic root of 2606035561 is about 1376.1320591731.

The spelling of 2606035561 in words is "two billion, six hundred six million, thirty-five thousand, five hundred sixty-one".