85713689 has 2 divisors, whose sum is σ = 85713690. Its totient is φ = 85713688.

The previous prime is 85713671. The next prime is 85713701. The reversal of 85713689 is 98631758.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43033600 + 42680089 = 6560^2 + 6533^2 .

It is a cyclic number.

It is not a de Polignac number, because 85713689 - 2¹² = 85709593 is a prime.

It is not a weakly prime, because it can be changed into another prime (85713629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42856844 + 42856845.

It is an arithmetic number, because the mean of its divisors is an integer number (42856845).

Almost surely, 2^85713689 is an apocalyptic number.

It is an amenable number.

85713689 is a deficient number, since it is larger than the sum of its proper divisors (1).

85713689 is an equidigital number, since it uses as much as digits as its factorization.

85713689 is an evil number, because the sum of its binary digits is even.

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

The square root of 85713689 is about 9258.1687714148. The cubic root of 85713689 is about 440.9101151472.

The spelling of 85713689 in words is "eighty-five million, seven hundred thirteen thousand, six hundred eighty-nine".