104606561 has 2 divisors, whose sum is σ = 104606562. Its totient is φ = 104606560.

The previous prime is 104606543. The next prime is 104606563. The reversal of 104606561 is 165606401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65918161 + 38688400 = 8119^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 104606561 - 2¹⁰ = 104605537 is a prime.

Together with 104606563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (104606563) 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, 52303280 + 52303281.

It is an arithmetic number, because the mean of its divisors is an integer number (52303281).

Almost surely, 2^104606561 is an apocalyptic number.

It is an amenable number.

104606561 is a deficient number, since it is larger than the sum of its proper divisors (1).

104606561 is an equidigital number, since it uses as much as digits as its factorization.

104606561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 104606561 is about 10227.7348909717. The cubic root of 104606561 is about 471.1794145512.

The spelling of 104606561 in words is "one hundred four million, six hundred six thousand, five hundred sixty-one".