2104785 has 20 divisors (see below), whose sum is σ = 3773748. Its totient is φ = 1122336.

The previous prime is 2104759. The next prime is 2104811. The reversal of 2104785 is 5874012.

It is an interprime number because it is at equal distance from previous prime (2104759) and next prime (2104811).

It can be written as a sum of positive squares in 2 ways, for example, as 859329 + 1245456 = 927^2 + 1116^2 .

It is not a de Polignac number, because 2104785 - 2⁷ = 2104657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2194 + ... + 3003.

2^2104785 is an apocalyptic number.

It is an amenable number.

2104785 is a deficient number, since it is larger than the sum of its proper divisors (1668963).

2104785 is an equidigital number, since it uses as much as digits as its factorization.

2104785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214 (or 5205 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2104785 is about 1450.7877170696. The cubic root of 2104785 is about 128.1551057551.

Adding to 2104785 its reverse (5874012), we get a palindrome (7978797).

The spelling of 2104785 in words is "two million, one hundred four thousand, seven hundred eighty-five".