2660842 has 8 divisors (see below), whose sum is σ = 4018500. Its totient is φ = 1321344.

The previous prime is 2660839. The next prime is 2660849. The reversal of 2660842 is 2480662.

2660842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2019241 + 641601 = 1421^2 + 801^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2660842.

It is not an unprimeable number, because it can be changed into a prime (2660849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4167 + ... + 4762.

2^2660842 is an apocalyptic number.

2660842 is a deficient number, since it is larger than the sum of its proper divisors (1357658).

2660842 is a wasteful number, since it uses less digits than its factorization.

2660842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9080.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2660842 is about 1631.2087542678. The cubic root of 2660842 is about 138.5712163123.

The spelling of 2660842 in words is "two million, six hundred sixty thousand, eight hundred forty-two".