2120647 has 8 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 1996344.

The previous prime is 2120639. The next prime is 2120653. The reversal of 2120647 is 7460212.

2120647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120647 - 2³ = 2120639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120147) 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 7 ways as a sum of consecutive naturals, for example, 4308 + ... + 4774.

It is an arithmetic number, because the mean of its divisors is an integer number (280800).

2^2120647 is an apocalyptic number.

2120647 is a deficient number, since it is larger than the sum of its proper divisors (125753).

2120647 is a wasteful number, since it uses less digits than its factorization.

2120647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2120647 is about 1456.2441416191. The cubic root of 2120647 is about 128.4762329433.

Adding to 2120647 its reverse (7460212), we get a palindrome (9580859).

The spelling of 2120647 in words is "two million, one hundred twenty thousand, six hundred forty-seven".