85685187 has 16 divisors (see below), whose sum is σ = 130929920. Its totient is φ = 48827232.

The previous prime is 85685167. The next prime is 85685207. The reversal of 85685187 is 78158658.

It is an interprime number because it is at equal distance from previous prime (85685167) and next prime (85685207).

It is not a de Polignac number, because 85685187 - 2⁶ = 85685123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85685167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2364 + ... + 13302.

It is an arithmetic number, because the mean of its divisors is an integer number (8183120).

Almost surely, 2^85685187 is an apocalyptic number.

85685187 is a deficient number, since it is larger than the sum of its proper divisors (45244733).

85685187 is a wasteful number, since it uses less digits than its factorization.

85685187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11322.

The product of its digits is 537600, while the sum is 48.

The square root of 85685187 is about 9256.6293541440. The cubic root of 85685187 is about 440.8612384219.

The spelling of 85685187 in words is "eighty-five million, six hundred eighty-five thousand, one hundred eighty-seven".