2061680 has 20 divisors (see below), whose sum is σ = 4793592. Its totient is φ = 824640.

The previous prime is 2061679. The next prime is 2061691. The reversal of 2061680 is 861602.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 12806 + ... + 12965.

2^2061680 is an apocalyptic number.

2061680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061680 is an abundant number, since it is smaller than the sum of its proper divisors (2731912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2061680 is a wasteful number, since it uses less digits than its factorization.

2061680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25784 (or 25778 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2061680 is about 1435.8551458974. The cubic root of 2061680 is about 127.2742127223.

The spelling of 2061680 in words is "two million, sixty-one thousand, six hundred eighty".