85681727 has 4 divisors (see below), whose sum is σ = 85832880. Its totient is φ = 85530576.

The previous prime is 85681723. The next prime is 85681733. The reversal of 85681727 is 72718658.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85681727 - 2² = 85681723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85681721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74723 + ... + 75860.

It is an arithmetic number, because the mean of its divisors is an integer number (21458220).

Almost surely, 2^85681727 is an apocalyptic number.

85681727 is a deficient number, since it is larger than the sum of its proper divisors (151153).

85681727 is a wasteful number, since it uses less digits than its factorization.

85681727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151152.

The product of its digits is 188160, while the sum is 44.

The square root of 85681727 is about 9256.4424591740. The cubic root of 85681727 is about 440.8553042946.

The spelling of 85681727 in words is "eighty-five million, six hundred eighty-one thousand, seven hundred twenty-seven".