2606212621 has 2 divisors, whose sum is σ = 2606212622. Its totient is φ = 2606212620.

The previous prime is 2606212597. The next prime is 2606212627. The reversal of 2606212621 is 1262126062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2543184900 + 63027721 = 50430^2 + 7939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2606212621 - 2¹⁵ = 2606179853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2606212621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2606212627) 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 as a sum of consecutive naturals, namely, 1303106310 + 1303106311.

It is an arithmetic number, because the mean of its divisors is an integer number (1303106311).

Almost surely, 2^2606212621 is an apocalyptic number.

It is an amenable number.

2606212621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2606212621 is an equidigital number, since it uses as much as digits as its factorization.

2606212621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2606212621 is about 51051.0785488416. The cubic root of 2606212621 is about 1376.1632243176.

Adding to 2606212621 its reverse (1262126062), we get a palindrome (3868338683).

It can be divided in two parts, 26062 and 12621, that added together give a palindrome (38683).

The spelling of 2606212621 in words is "two billion, six hundred six million, two hundred twelve thousand, six hundred twenty-one".