2061684 has 18 divisors (see below), whose sum is σ = 5211570. Its totient is φ = 687216.

The previous prime is 2061679. The next prime is 2061691. The reversal of 2061684 is 4861602.

It can be written as a sum of positive squares in only one way, i.e., 2039184 + 22500 = 1428^2 + 150^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28599 + ... + 28670.

2^2061684 is an apocalyptic number.

It is an amenable number.

2061684 is an abundant number, since it is smaller than the sum of its proper divisors (3149886).

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

2061684 is a wasteful number, since it uses less digits than its factorization.

2061684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57279 (or 57274 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2061684 is about 1435.8565387949. The cubic root of 2061684 is about 127.2742950333.

The spelling of 2061684 in words is "two million, sixty-one thousand, six hundred eighty-four".