85136427 has 20 divisors (see below), whose sum is σ = 127903776. Its totient is φ = 56434320.

The previous prime is 85136423. The next prime is 85136453. The reversal of 85136427 is 72463158.

85136427 is a `hidden beast` number, since 8 + 5 + 1 + 3 + 642 + 7 = 666.

It is not a de Polignac number, because 85136427 - 2² = 85136423 is a prime.

It is a super-2 number, since 2×85136427² = 14496422404652658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85136391 and 85136400.

It is not an unprimeable number, because it can be changed into a prime (85136423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11758 + ... + 17564.

Almost surely, 2^85136427 is an apocalyptic number.

85136427 is a deficient number, since it is larger than the sum of its proper divisors (42767349).

85136427 is a wasteful number, since it uses less digits than its factorization.

85136427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000 (or 5991 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 85136427 is about 9226.9402837560. The cubic root of 85136427 is about 439.9180753119.

The spelling of 85136427 in words is "eighty-five million, one hundred thirty-six thousand, four hundred twenty-seven".