2002646 has 4 divisors (see below), whose sum is σ = 3003972. Its totient is φ = 1001322.

The previous prime is 2002643. The next prime is 2002661. The reversal of 2002646 is 6462002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6462002 = 2 ⋅3231001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500660 + ... + 500663.

It is an arithmetic number, because the mean of its divisors is an integer number (750993).

2^2002646 is an apocalyptic number.

2002646 is a deficient number, since it is larger than the sum of its proper divisors (1001326).

2002646 is a wasteful number, since it uses less digits than its factorization.

2002646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001325.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2002646 is about 1415.1487554317. The cubic root of 2002646 is about 126.0476430227.

Adding to 2002646 its reverse (6462002), we get a palindrome (8464648).

The spelling of 2002646 in words is "two million, two thousand, six hundred forty-six".