2001764 has 12 divisors (see below), whose sum is σ = 3687600. Its totient is φ = 948168.

The previous prime is 2001751. The next prime is 2001787. The reversal of 2001764 is 4671002.

It is a super-2 number, since 2×2001764² = 8014118223392, which contains 22 as substring.

It is an unprimeable number.

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, 13094 + ... + 13245.

It is an arithmetic number, because the mean of its divisors is an integer number (307300).

2^2001764 is an apocalyptic number.

It is an amenable number.

2001764 is a deficient number, since it is larger than the sum of its proper divisors (1685836).

2001764 is a wasteful number, since it uses less digits than its factorization.

2001764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26362 (or 26360 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 2001764 is about 1414.8370930959. The cubic root of 2001764 is about 126.0291357834.

Adding to 2001764 its reverse (4671002), we get a palindrome (6672766).

The spelling of 2001764 in words is "two million, one thousand, seven hundred sixty-four".