16056665 has 8 divisors (see below), whose sum is σ = 19318920. Its totient is φ = 12811392.

The previous prime is 16056659. The next prime is 16056679. The reversal of 16056665 is 56665061.

It can be written as a sum of positive squares in 4 ways, for example, as 80656 + 15976009 = 284^2 + 3997^2 .

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 16056665 - 2¹⁴ = 16040281 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2060 + ... + 6029.

It is an arithmetic number, because the mean of its divisors is an integer number (2414865).

Almost surely, 2^16056665 is an apocalyptic number.

It is an amenable number.

16056665 is a deficient number, since it is larger than the sum of its proper divisors (3262255).

16056665 is an equidigital number, since it uses as much as digits as its factorization.

16056665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8491.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 16056665 is about 4007.0768647482. The cubic root of 16056665 is about 252.2813321052.

The spelling of 16056665 in words is "sixteen million, fifty-six thousand, six hundred sixty-five".