85692689 has 2 divisors, whose sum is σ = 85692690. Its totient is φ = 85692688.

The previous prime is 85692667. The next prime is 85692749. The reversal of 85692689 is 98629658.

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., 84953089 + 739600 = 9217^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 85692689 - 2¹⁶ = 85627153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85692689.

It is not a weakly prime, because it can be changed into another prime (85692619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42846344 + 42846345.

It is an arithmetic number, because the mean of its divisors is an integer number (42846345).

Almost surely, 2^85692689 is an apocalyptic number.

It is an amenable number.

85692689 is a deficient number, since it is larger than the sum of its proper divisors (1).

85692689 is an equidigital number, since it uses as much as digits as its factorization.

85692689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 53.

The square root of 85692689 is about 9257.0345683702. The cubic root of 85692689 is about 440.8741042961.

The spelling of 85692689 in words is "eighty-five million, six hundred ninety-two thousand, six hundred eighty-nine".