85366187 has 2 divisors, whose sum is σ = 85366188. Its totient is φ = 85366186.

The previous prime is 85366181. The next prime is 85366243. The reversal of 85366187 is 78166358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85366187 - 2¹² = 85362091 is a prime.

It is not a weakly prime, because it can be changed into another prime (85366181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42683093 + 42683094.

It is an arithmetic number, because the mean of its divisors is an integer number (42683094).

Almost surely, 2^85366187 is an apocalyptic number.

85366187 is a deficient number, since it is larger than the sum of its proper divisors (1).

85366187 is an equidigital number, since it uses as much as digits as its factorization.

85366187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 85366187 is about 9239.3823927793. The cubic root of 85366187 is about 440.3134594872.

The spelling of 85366187 in words is "eighty-five million, three hundred sixty-six thousand, one hundred eighty-seven".