85971727 has 2 divisors, whose sum is σ = 85971728. Its totient is φ = 85971726.

The previous prime is 85971719. The next prime is 85971797. The reversal of 85971727 is 72717958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85971727 - 2³ = 85971719 is a prime.

It is a super-2 number, since 2×85971727² = 14782275686725058, 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 (85971707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42985863 + 42985864.

It is an arithmetic number, because the mean of its divisors is an integer number (42985864).

Almost surely, 2^85971727 is an apocalyptic number.

85971727 is a deficient number, since it is larger than the sum of its proper divisors (1).

85971727 is an equidigital number, since it uses as much as digits as its factorization.

85971727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 46.

The square root of 85971727 is about 9272.0939921897. The cubic root of 85971727 is about 441.3521199494.

The spelling of 85971727 in words is "eighty-five million, nine hundred seventy-one thousand, seven hundred twenty-seven".