85709227 has 4 divisors (see below), whose sum is σ = 86883400. Its totient is φ = 84535056.

The previous prime is 85709179. The next prime is 85709249. The reversal of 85709227 is 72290758.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85709227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85709227.

It is not an unprimeable number, because it can be changed into a prime (85709027) 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, 586977 + ... + 587122.

It is an arithmetic number, because the mean of its divisors is an integer number (21720850).

Almost surely, 2^85709227 is an apocalyptic number.

85709227 is a deficient number, since it is larger than the sum of its proper divisors (1174173).

85709227 is a wasteful number, since it uses less digits than its factorization.

85709227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174172.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 85709227 is about 9257.9277918981. The cubic root of 85709227 is about 440.9024641909.

The spelling of 85709227 in words is "eighty-five million, seven hundred nine thousand, two hundred twenty-seven".