8105685865 has 8 divisors (see below), whose sum is σ = 9727712640. Its totient is φ = 6483955632.

The previous prime is 8105685859. The next prime is 8105685871. The reversal of 8105685865 is 5685865018.

It is an interprime number because it is at equal distance from previous prime (8105685859) and next prime (8105685871).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8105685865 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8755 + ... + 127624.

It is an arithmetic number, because the mean of its divisors is an integer number (1215964080).

Almost surely, 2^8105685865 is an apocalyptic number.

It is an amenable number.

8105685865 is a deficient number, since it is larger than the sum of its proper divisors (1622026775).

8105685865 is a wasteful number, since it uses less digits than its factorization.

8105685865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148271.

The product of its (nonzero) digits is 2304000, while the sum is 52.

The square root of 8105685865 is about 90031.5825974419. The cubic root of 8105685865 is about 2008.7686545804.

The spelling of 8105685865 in words is "eight billion, one hundred five million, six hundred eighty-five thousand, eight hundred sixty-five".