261705883 has 2 divisors, whose sum is σ = 261705884. Its totient is φ = 261705882.

The previous prime is 261705863. The next prime is 261705901. The reversal of 261705883 is 388507162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261705883 - 2¹⁷ = 261574811 is a prime.

It is not a weakly prime, because it can be changed into another prime (261705863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130852941 + 130852942.

It is an arithmetic number, because the mean of its divisors is an integer number (130852942).

Almost surely, 2^261705883 is an apocalyptic number.

261705883 is a deficient number, since it is larger than the sum of its proper divisors (1).

261705883 is an equidigital number, since it uses as much as digits as its factorization.

261705883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 261705883 is about 16177.3262005809. The cubic root of 261705883 is about 639.6432606612.

The spelling of 261705883 in words is "two hundred sixty-one million, seven hundred five thousand, eight hundred eighty-three".