2120684 has 24 divisors (see below), whose sum is σ = 3878448. Its totient is φ = 1013760.

The previous prime is 2120653. The next prime is 2120693. The reversal of 2120684 is 4860212.

2120684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 10892 + ... + 11084.

It is an arithmetic number, because the mean of its divisors is an integer number (161602).

2^2120684 is an apocalyptic number.

It is an amenable number.

2120684 is a deficient number, since it is larger than the sum of its proper divisors (1757764).

2120684 is a wasteful number, since it uses less digits than its factorization.

2120684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2120684 is about 1456.2568454775. The cubic root of 2120684 is about 128.4769801356.

Adding to 2120684 its reverse (4860212), we get a palindrome (6980896).

The spelling of 2120684 in words is "two million, one hundred twenty thousand, six hundred eighty-four".