7204621 has 2 divisors, whose sum is σ = 7204622. Its totient is φ = 7204620.

The previous prime is 7204619. The next prime is 7204697. The reversal of 7204621 is 1264027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6734025 + 470596 = 2595^2 + 686^2 .

It is an emirp because it is prime and its reverse (1264027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7204621 - 2¹ = 7204619 is a prime.

Together with 7204619, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7204592 and 7204601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7204921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3602310 + 3602311.

It is an arithmetic number, because the mean of its divisors is an integer number (3602311).

Almost surely, 2^7204621 is an apocalyptic number.

It is an amenable number.

7204621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7204621 is an equidigital number, since it uses as much as digits as its factorization.

7204621 is an odious number, because the sum of its binary digits is odd.

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

The square root of 7204621 is about 2684.1425073941. The cubic root of 7204621 is about 193.1391785166.

Adding to 7204621 its reverse (1264027), we get a palindrome (8468648).

The spelling of 7204621 in words is "seven million, two hundred four thousand, six hundred twenty-one".