2606242643 has 4 divisors (see below), whose sum is σ = 2606865768. Its totient is φ = 2605619520.

The previous prime is 2606242621. The next prime is 2606242693. The reversal of 2606242643 is 3462426062.

2606242643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2606242643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2606242603) 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, 305246 + ... + 313667.

It is an arithmetic number, because the mean of its divisors is an integer number (651716442).

Almost surely, 2^2606242643 is an apocalyptic number.

2606242643 is a deficient number, since it is larger than the sum of its proper divisors (623125).

2606242643 is an equidigital number, since it uses as much as digits as its factorization.

2606242643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623124.

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 2606242643 is about 51051.3725868365. The cubic root of 2606242643 is about 1376.1685084879.

The spelling of 2606242643 in words is "two billion, six hundred six million, two hundred forty-two thousand, six hundred forty-three".