2081684 has 48 divisors (see below), whose sum is σ = 4427136. Its totient is φ = 851840.

The previous prime is 2081671. The next prime is 2081687. The reversal of 2081684 is 4861802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90497 + ... + 90519.

It is an arithmetic number, because the mean of its divisors is an integer number (92232).

2^2081684 is an apocalyptic number.

It is an amenable number.

2081684 is an abundant number, since it is smaller than the sum of its proper divisors (2345452).

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

2081684 is a wasteful number, since it uses less digits than its factorization.

2081684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 2081684 is about 1442.8042140221. The cubic root of 2081684 is about 127.6845258423.

The spelling of 2081684 in words is "two million, eighty-one thousand, six hundred eighty-four".