85840865 has 8 divisors (see below), whose sum is σ = 112373568. Its totient is φ = 62429680.

The previous prime is 85840861. The next prime is 85840883. The reversal of 85840865 is 56804858.

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

It is not a de Polignac number, because 85840865 - 2² = 85840861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85840861) 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, 780317 + ... + 780426.

It is an arithmetic number, because the mean of its divisors is an integer number (14046696).

Almost surely, 2^85840865 is an apocalyptic number.

It is an amenable number.

85840865 is a deficient number, since it is larger than the sum of its proper divisors (26532703).

85840865 is a wasteful number, since it uses less digits than its factorization.

85840865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560759.

The product of its (nonzero) digits is 307200, while the sum is 44.

The square root of 85840865 is about 9265.0345385217. The cubic root of 85840865 is about 441.1280712901.

The spelling of 85840865 in words is "eighty-five million, eight hundred forty thousand, eight hundred sixty-five".