2606197543 has 4 divisors (see below), whose sum is σ = 2606614128. Its totient is φ = 2605780960.

The previous prime is 2606197523. The next prime is 2606197571. The reversal of 2606197543 is 3457916062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3457916062 = 2 ⋅1728958031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2606197543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2606197543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606197523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198763 + ... + 211468.

It is an arithmetic number, because the mean of its divisors is an integer number (651653532).

Almost surely, 2^2606197543 is an apocalyptic number.

2606197543 is a deficient number, since it is larger than the sum of its proper divisors (416585).

2606197543 is an equidigital number, since it uses as much as digits as its factorization.

2606197543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416584.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 2606197543 is about 51050.9308730017. The cubic root of 2606197543 is about 1376.1605704245.

The spelling of 2606197543 in words is "two billion, six hundred six million, one hundred ninety-seven thousand, five hundred forty-three".