85665103 has 2 divisors, whose sum is σ = 85665104. Its totient is φ = 85665102.

The previous prime is 85665077. The next prime is 85665127. The reversal of 85665103 is 30156658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85665103 - 2⁵ = 85665071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85662103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42832551 + 42832552.

It is an arithmetic number, because the mean of its divisors is an integer number (42832552).

Almost surely, 2^85665103 is an apocalyptic number.

85665103 is a deficient number, since it is larger than the sum of its proper divisors (1).

85665103 is an equidigital number, since it uses as much as digits as its factorization.

85665103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 85665103 is about 9255.5444464386. The cubic root of 85665103 is about 440.8267908147.

The spelling of 85665103 in words is "eighty-five million, six hundred sixty-five thousand, one hundred three".