2002664 has 16 divisors (see below), whose sum is σ = 3780000. Its totient is φ = 994672.

The previous prime is 2002661. The next prime is 2002667. The reversal of 2002664 is 4662002.

It is an interprime number because it is at equal distance from previous prime (2002661) and next prime (2002667).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2002661) 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, 587 + ... + 2085.

It is an arithmetic number, because the mean of its divisors is an integer number (236250).

2^2002664 is an apocalyptic number.

It is an amenable number.

2002664 is a deficient number, since it is larger than the sum of its proper divisors (1777336).

2002664 is a wasteful number, since it uses less digits than its factorization.

2002664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672 (or 1668 counting only the distinct ones).

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

The square root of 2002664 is about 1415.1551151729. The cubic root of 2002664 is about 126.0480206649.

Adding to 2002664 its reverse (4662002), we get a palindrome (6664666).

The spelling of 2002664 in words is "two million, two thousand, six hundred sixty-four".