2104621 has 4 divisors (see below), whose sum is σ = 2172544. Its totient is φ = 2036700.

The previous prime is 2104607. The next prime is 2104633. The reversal of 2104621 is 1264012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2104621 - 2¹³ = 2096429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2104595 and 2104604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33915 + ... + 33976.

It is an arithmetic number, because the mean of its divisors is an integer number (543136).

2^2104621 is an apocalyptic number.

It is an amenable number.

2104621 is a deficient number, since it is larger than the sum of its proper divisors (67923).

2104621 is an equidigital number, since it uses as much as digits as its factorization.

2104621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67922.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2104621 is about 1450.7311949496. The cubic root of 2104621 is about 128.1517771518.

Adding to 2104621 its reverse (1264012), we get a palindrome (3368633).

The spelling of 2104621 in words is "two million, one hundred four thousand, six hundred twenty-one".