85814669 has 2 divisors, whose sum is σ = 85814670. Its totient is φ = 85814668.

The previous prime is 85814593. The next prime is 85814711. The reversal of 85814669 is 96641858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72760900 + 13053769 = 8530^2 + 3613^2 .

It is a cyclic number.

It is not a de Polignac number, because 85814669 - 2⁸ = 85814413 is a prime.

It is a super-2 number, since 2×85814669² = 14728314831159122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85214669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42907334 + 42907335.

It is an arithmetic number, because the mean of its divisors is an integer number (42907335).

Almost surely, 2^85814669 is an apocalyptic number.

It is an amenable number.

85814669 is a deficient number, since it is larger than the sum of its proper divisors (1).

85814669 is an equidigital number, since it uses as much as digits as its factorization.

85814669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 47.

The square root of 85814669 is about 9263.6207284193. The cubic root of 85814669 is about 441.0831938041.

The spelling of 85814669 in words is "eighty-five million, eight hundred fourteen thousand, six hundred sixty-nine".