7204861 has 2 divisors, whose sum is σ = 7204862. Its totient is φ = 7204860.

The previous prime is 7204859. The next prime is 7204891. The reversal of 7204861 is 1684027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4280761 + 2924100 = 2069^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 7204861 - 2¹ = 7204859 is a prime.

Together with 7204859, it forms a pair of twin primes.

It is a Chen prime.

7204861 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7204801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3602430 + 3602431.

It is an arithmetic number, because the mean of its divisors is an integer number (3602431).

Almost surely, 2^7204861 is an apocalyptic number.

It is an amenable number.

7204861 is a deficient number, since it is larger than the sum of its proper divisors (1).

7204861 is an equidigital number, since it uses as much as digits as its factorization.

7204861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 7204861 is about 2684.1872140371. The cubic root of 7204861 is about 193.1413231072.

Adding to 7204861 its reverse (1684027), we get a palindrome (8888888).

The spelling of 7204861 in words is "seven million, two hundred four thousand, eight hundred sixty-one".