85918673 has 2 divisors, whose sum is σ = 85918674. Its totient is φ = 85918672.

The previous prime is 85918649. The next prime is 85918717. The reversal of 85918673 is 37681958.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49098049 + 36820624 = 7007^2 + 6068^2 .

It is a cyclic number.

It is not a de Polignac number, because 85918673 - 2¹⁰ = 85917649 is a prime.

It is not a weakly prime, because it can be changed into another prime (85918633) 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, 42959336 + 42959337.

It is an arithmetic number, because the mean of its divisors is an integer number (42959337).

Almost surely, 2^85918673 is an apocalyptic number.

It is an amenable number.

85918673 is a deficient number, since it is larger than the sum of its proper divisors (1).

85918673 is an equidigital number, since it uses as much as digits as its factorization.

85918673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 85918673 is about 9269.2326003828. The cubic root of 85918673 is about 441.2613136867.

The spelling of 85918673 in words is "eighty-five million, nine hundred eighteen thousand, six hundred seventy-three".