2000651 has 4 divisors (see below), whose sum is σ = 2013552. Its totient is φ = 1987752.

The previous prime is 2000639. The next prime is 2000653. The reversal of 2000651 is 1560002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2000651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000653) 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, 6215 + ... + 6528.

It is an arithmetic number, because the mean of its divisors is an integer number (503388).

2^2000651 is an apocalyptic number.

2000651 is a deficient number, since it is larger than the sum of its proper divisors (12901).

2000651 is a wasteful number, since it uses less digits than its factorization.

2000651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12900.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2000651 is about 1414.4437069039. The cubic root of 2000651 is about 126.0057736499.

Adding to 2000651 its reverse (1560002), we get a palindrome (3560653).

It can be divided in two parts, 20006 and 51, that multiplied together give a triangular number (1020306 = T₁₄₂₈).

The spelling of 2000651 in words is "two million, six hundred fifty-one", and thus it is an aban number.