85133865 has 8 divisors (see below), whose sum is σ = 136214208. Its totient is φ = 45404720.

The previous prime is 85133849. The next prime is 85133869. The reversal of 85133865 is 56833158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85133865 - 2⁴ = 85133849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85133869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2837781 + ... + 2837810.

It is an arithmetic number, because the mean of its divisors is an integer number (17026776).

Almost surely, 2^85133865 is an apocalyptic number.

It is an amenable number.

85133865 is a deficient number, since it is larger than the sum of its proper divisors (51080343).

85133865 is a wasteful number, since it uses less digits than its factorization.

85133865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5675599.

The product of its digits is 86400, while the sum is 39.

The square root of 85133865 is about 9226.8014501234. The cubic root of 85133865 is about 439.9136624675.

It can be divided in two parts, 851 and 33865, that added together give a triangular number (34716 = T₂₆₃).

The spelling of 85133865 in words is "eighty-five million, one hundred thirty-three thousand, eight hundred sixty-five".