85638727 has 4 divisors (see below), whose sum is σ = 85678096. Its totient is φ = 85599360.

The previous prime is 85638703. The next prime is 85638779. The reversal of 85638727 is 72783658.

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 85638727 - 2⁷ = 85638599 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85638227) 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, 16218 + ... + 20839.

It is an arithmetic number, because the mean of its divisors is an integer number (21419524).

Almost surely, 2^85638727 is an apocalyptic number.

85638727 is a deficient number, since it is larger than the sum of its proper divisors (39369).

85638727 is a wasteful number, since it uses less digits than its factorization.

85638727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39368.

The product of its digits is 564480, while the sum is 46.

The square root of 85638727 is about 9254.1194610833. The cubic root of 85638727 is about 440.7815431368.

The spelling of 85638727 in words is "eighty-five million, six hundred thirty-eight thousand, seven hundred twenty-seven".