2842661 has 4 divisors (see below), whose sum is σ = 2889324. Its totient is φ = 2796000.

The previous prime is 2842649. The next prime is 2842663. The reversal of 2842661 is 1662482.

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

It can be written as a sum of positive squares in 2 ways, for example, as 185761 + 2656900 = 431^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 2842661 - 2⁶ = 2842597 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2842663) 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, 23240 + ... + 23361.

It is an arithmetic number, because the mean of its divisors is an integer number (722331).

2^2842661 is an apocalyptic number.

It is an amenable number.

2842661 is a deficient number, since it is larger than the sum of its proper divisors (46663).

2842661 is an equidigital number, since it uses as much as digits as its factorization.

2842661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46662.

The product of its digits is 4608, while the sum is 29.

The square root of 2842661 is about 1686.0192762836. The cubic root of 2842661 is about 141.6581906501.

The spelling of 2842661 in words is "two million, eight hundred forty-two thousand, six hundred sixty-one".