85136417 has 4 divisors (see below), whose sum is σ = 85280580. Its totient is φ = 84992256.

The previous prime is 85136407. The next prime is 85136423. The reversal of 85136417 is 71463158.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29767936 + 55368481 = 5456^2 + 7441^2 .

It is a cyclic number.

It is not a de Polignac number, because 85136417 - 2²⁴ = 68359201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85136407) 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, 71192 + ... + 72377.

It is an arithmetic number, because the mean of its divisors is an integer number (21320145).

Almost surely, 2^85136417 is an apocalyptic number.

It is an amenable number.

85136417 is a deficient number, since it is larger than the sum of its proper divisors (144163).

85136417 is a wasteful number, since it uses less digits than its factorization.

85136417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144162.

The product of its digits is 20160, while the sum is 35.

The square root of 85136417 is about 9226.9397418646. The cubic root of 85136417 is about 439.9180580879.

The spelling of 85136417 in words is "eighty-five million, one hundred thirty-six thousand, four hundred seventeen".