85743887 has 2 divisors, whose sum is σ = 85743888. Its totient is φ = 85743886.

The previous prime is 85743883. The next prime is 85743893. The reversal of 85743887 is 78834758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85743887 - 2² = 85743883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85743883) 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, 42871943 + 42871944.

It is an arithmetic number, because the mean of its divisors is an integer number (42871944).

Almost surely, 2^85743887 is an apocalyptic number.

85743887 is a deficient number, since it is larger than the sum of its proper divisors (1).

85743887 is an equidigital number, since it uses as much as digits as its factorization.

85743887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1505280, while the sum is 50.

The square root of 85743887 is about 9259.7995118685. The cubic root of 85743887 is about 440.9618884422.

It can be divided in two parts, 857 and 43887, that added together give a palindrome (44744).

The spelling of 85743887 in words is "eighty-five million, seven hundred forty-three thousand, eight hundred eighty-seven".