85611065 has 32 divisors (see below), whose sum is σ = 113477760. Its totient is φ = 61737984.

The previous prime is 85611061. The next prime is 85611067. The reversal of 85611065 is 56011658.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85611065 - 2² = 85611061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85611061) 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, 215447 + ... + 215843.

It is an arithmetic number, because the mean of its divisors is an integer number (3546180).

Almost surely, 2^85611065 is an apocalyptic number.

85611065 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85611065 is a deficient number, since it is larger than the sum of its proper divisors (27866695).

85611065 is a wasteful number, since it uses less digits than its factorization.

85611065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 85611065 is about 9252.6247627362. The cubic root of 85611065 is about 440.7340793607.

The spelling of 85611065 in words is "eighty-five million, six hundred eleven thousand, sixty-five".