2606646642 has 8 divisors (see below), whose sum is σ = 5213293296. Its totient is φ = 868882212.

The previous prime is 2606646641. The next prime is 2606646659. The reversal of 2606646642 is 2466466062.

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

2606646642 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2606646594 and 2606646603.

It is not an unprimeable number, because it can be changed into a prime (2606646641) 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, 217220548 + ... + 217220559.

It is an arithmetic number, because the mean of its divisors is an integer number (651661662).

Almost surely, 2^2606646642 is an apocalyptic number.

2606646642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2606646642 is a wasteful number, since it uses less digits than its factorization.

2606646642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434441112.

The product of its (nonzero) digits is 497664, while the sum is 42.

The square root of 2606646642 is about 51055.3292223251. The cubic root of 2606646642 is about 1376.2396123786.

The spelling of 2606646642 in words is "two billion, six hundred six million, six hundred forty-six thousand, six hundred forty-two".