16090865 has 12 divisors (see below), whose sum is σ = 22461876. Its totient is φ = 11033568.

The previous prime is 16090859. The next prime is 16090883. The reversal of 16090865 is 56809061.

It can be written as a sum of positive squares in 2 ways, for example, as 4036081 + 12054784 = 2009^2 + 3472^2 .

It is not a de Polignac number, because 16090865 - 2⁴ = 16090849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32594 + ... + 33083.

It is an arithmetic number, because the mean of its divisors is an integer number (1871823).

Almost surely, 2^16090865 is an apocalyptic number.

It is an amenable number.

16090865 is a deficient number, since it is larger than the sum of its proper divisors (6371011).

16090865 is an equidigital number, since it uses as much as digits as its factorization.

16090865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65696 (or 65689 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 16090865 is about 4011.3420447526. The cubic root of 16090865 is about 252.4603211839.

The spelling of 16090865 in words is "sixteen million, ninety thousand, eight hundred sixty-five".