2827621 has 2 divisors, whose sum is σ = 2827622. Its totient is φ = 2827620.

The previous prime is 2827571. The next prime is 2827631. The reversal of 2827621 is 1267282.

2827621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2070721 + 756900 = 1439^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2827621 - 2⁷ = 2827493 is a prime.

It is a Chen prime.

2827621 is a lucky number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2827621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2827631) 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 as a sum of consecutive naturals, namely, 1413810 + 1413811.

It is an arithmetic number, because the mean of its divisors is an integer number (1413811).

2^2827621 is an apocalyptic number.

It is an amenable number.

2827621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2827621 is an equidigital number, since it uses as much as digits as its factorization.

2827621 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2827621 is about 1681.5531511076. The cubic root of 2827621 is about 141.4079195483.

The spelling of 2827621 in words is "two million, eight hundred twenty-seven thousand, six hundred twenty-one".