85771747 has 2 divisors, whose sum is σ = 85771748. Its totient is φ = 85771746.

The previous prime is 85771739. The next prime is 85771753. The reversal of 85771747 is 74717758.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85771747 - 2³ = 85771739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85771697 and 85771706.

It is not a weakly prime, because it can be changed into another prime (85771787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42885873 + 42885874.

It is an arithmetic number, because the mean of its divisors is an integer number (42885874).

Almost surely, 2^85771747 is an apocalyptic number.

85771747 is a deficient number, since it is larger than the sum of its proper divisors (1).

85771747 is an equidigital number, since it uses as much as digits as its factorization.

85771747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384160, while the sum is 46.

The square root of 85771747 is about 9261.3037419145. The cubic root of 85771747 is about 441.0096425478.

The spelling of 85771747 in words is "eighty-five million, seven hundred seventy-one thousand, seven hundred forty-seven".