2704621 has 4 divisors (see below), whose sum is σ = 2735100. Its totient is φ = 2674144.

The previous prime is 2704607. The next prime is 2704661. The reversal of 2704621 is 1264072.

2704621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1179396 + 1525225 = 1086^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2704621 - 2⁹ = 2704109 is a prime.

It is a Duffinian number.

2704621 is a lucky number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 2704592 and 2704601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2704661) 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 3 ways as a sum of consecutive naturals, for example, 15106 + ... + 15283.

It is an arithmetic number, because the mean of its divisors is an integer number (683775).

2^2704621 is an apocalyptic number.

It is an amenable number.

2704621 is a deficient number, since it is larger than the sum of its proper divisors (30479).

2704621 is an equidigital number, since it uses as much as digits as its factorization.

2704621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30478.

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

The square root of 2704621 is about 1644.5731969116. The cubic root of 2704621 is about 139.3270596648.

Adding to 2704621 its reverse (1264072), we get a palindrome (3968693).

The spelling of 2704621 in words is "two million, seven hundred four thousand, six hundred twenty-one".