85684727 has 4 divisors (see below), whose sum is σ = 85826496. Its totient is φ = 85542960.

The previous prime is 85684723. The next prime is 85684733. The reversal of 85684727 is 72748658.

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 85684727 - 2² = 85684723 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 (85684721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69974 + ... + 71187.

It is an arithmetic number, because the mean of its divisors is an integer number (21456624).

Almost surely, 2^85684727 is an apocalyptic number.

85684727 is a deficient number, since it is larger than the sum of its proper divisors (141769).

85684727 is a wasteful number, since it uses less digits than its factorization.

85684727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141768.

The product of its digits is 752640, while the sum is 47.

The square root of 85684727 is about 9256.6045070533. The cubic root of 85684727 is about 440.8604495009.

The spelling of 85684727 in words is "eighty-five million, six hundred eighty-four thousand, seven hundred twenty-seven".