65106409 has 2 divisors, whose sum is σ = 65106410. Its totient is φ = 65106408.

The previous prime is 65106367. The next prime is 65106449. The reversal of 65106409 is 90460156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50013184 + 15093225 = 7072^2 + 3885^2 .

It is a cyclic number.

It is not a de Polignac number, because 65106409 - 2⁷ = 65106281 is a prime.

It is not a weakly prime, because it can be changed into another prime (65106449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32553204 + 32553205.

It is an arithmetic number, because the mean of its divisors is an integer number (32553205).

Almost surely, 2^65106409 is an apocalyptic number.

It is an amenable number.

65106409 is a deficient number, since it is larger than the sum of its proper divisors (1).

65106409 is an equidigital number, since it uses as much as digits as its factorization.

65106409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 65106409 is about 8068.8542557169. The cubic root of 65106409 is about 402.2918620906.

The spelling of 65106409 in words is "sixty-five million, one hundred six thousand, four hundred nine".