85216727 has 4 divisors (see below), whose sum is σ = 85267416. Its totient is φ = 85166040.

The previous prime is 85216723. The next prime is 85216757. The reversal of 85216727 is 72761258.

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 85216727 - 2² = 85216723 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 (85216723) 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, 22733 + ... + 26214.

It is an arithmetic number, because the mean of its divisors is an integer number (21316854).

Almost surely, 2^85216727 is an apocalyptic number.

85216727 is a deficient number, since it is larger than the sum of its proper divisors (50689).

85216727 is a wasteful number, since it uses less digits than its factorization.

85216727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50688.

The product of its digits is 47040, while the sum is 38.

The square root of 85216727 is about 9231.2906464914. The cubic root of 85216727 is about 440.0563409259.

The spelling of 85216727 in words is "eighty-five million, two hundred sixteen thousand, seven hundred twenty-seven".