2606642543 has 8 divisors (see below), whose sum is σ = 2619081600. Its totient is φ = 2594231640.

The previous prime is 2606642539. The next prime is 2606642551. The reversal of 2606642543 is 3452466062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2606642543 - 2² = 2606642539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2606642497 and 2606642506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606642593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191696 + ... + 204842.

It is an arithmetic number, because the mean of its divisors is an integer number (327385200).

Almost surely, 2^2606642543 is an apocalyptic number.

2606642543 is a deficient number, since it is larger than the sum of its proper divisors (12439057).

2606642543 is a wasteful number, since it uses less digits than its factorization.

2606642543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14077.

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 2606642543 is about 51055.2890795851. The cubic root of 2606642543 is about 1376.2388909908.

The spelling of 2606642543 in words is "two billion, six hundred six million, six hundred forty-two thousand, five hundred forty-three".