20086865 has 8 divisors (see below), whose sum is σ = 24157440. Its totient is φ = 16034032.

The previous prime is 20086849. The next prime is 20086867. The reversal of 20086865 is 56868002.

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

It is a cyclic number.

It is not a de Polignac number, because 20086865 - 2⁴ = 20086849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20086867) 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, 1799 + ... + 6588.

It is an arithmetic number, because the mean of its divisors is an integer number (3019680).

Almost surely, 2^20086865 is an apocalyptic number.

It is an amenable number.

20086865 is a deficient number, since it is larger than the sum of its proper divisors (4070575).

20086865 is an equidigital number, since it uses as much as digits as its factorization.

20086865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8871.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 20086865 is about 4481.8372348848. The cubic root of 20086865 is about 271.8341739022.

The spelling of 20086865 in words is "twenty million, eighty-six thousand, eight hundred sixty-five".