85180785 has 32 divisors (see below), whose sum is σ = 139594752. Its totient is φ = 44341440.

The previous prime is 85180783. The next prime is 85180787. The reversal of 85180785 is 58708158.

It is an interprime number because it is at equal distance from previous prime (85180783) and next prime (85180787).

It is not a de Polignac number, because 85180785 - 2¹ = 85180783 is a prime.

It is a super-2 number, since 2×85180785² = 14511532266432450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85180783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131332 + ... + 131978.

It is an arithmetic number, because the mean of its divisors is an integer number (4362336).

Almost surely, 2^85180785 is an apocalyptic number.

It is an amenable number.

85180785 is a deficient number, since it is larger than the sum of its proper divisors (54413967).

85180785 is a wasteful number, since it uses less digits than its factorization.

85180785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 89600, while the sum is 42.

The square root of 85180785 is about 9229.3436928094. The cubic root of 85180785 is about 439.9944644620.

The spelling of 85180785 in words is "eighty-five million, one hundred eighty thousand, seven hundred eighty-five".