272065621 has 2 divisors, whose sum is σ = 272065622. Its totient is φ = 272065620.

The previous prime is 272065561. The next prime is 272065631. The reversal of 272065621 is 126560272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242144721 + 29920900 = 15561^2 + 5470^2 .

It is a cyclic number.

It is not a de Polignac number, because 272065621 - 2⁹ = 272065109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272065631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136032810 + 136032811.

It is an arithmetic number, because the mean of its divisors is an integer number (136032811).

Almost surely, 2^272065621 is an apocalyptic number.

It is an amenable number.

272065621 is a deficient number, since it is larger than the sum of its proper divisors (1).

272065621 is an equidigital number, since it uses as much as digits as its factorization.

272065621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 272065621 is about 16494.4118112772. The cubic root of 272065621 is about 647.9744606164.

The spelling of 272065621 in words is "two hundred seventy-two million, sixty-five thousand, six hundred twenty-one".