14891665 has 8 divisors (see below), whose sum is σ = 17901288. Its totient is φ = 11892480.

The previous prime is 14891663. The next prime is 14891671. The reversal of 14891665 is 56619841.

14891665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 138384 + 14753281 = 372^2 + 3841^2 .

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

It is not a de Polignac number, because 14891665 - 2¹ = 14891663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14891663) 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, 985 + ... + 5545.

It is an arithmetic number, because the mean of its divisors is an integer number (2237661).

Almost surely, 2^14891665 is an apocalyptic number.

It is an amenable number.

14891665 is a deficient number, since it is larger than the sum of its proper divisors (3009623).

14891665 is an equidigital number, since it uses as much as digits as its factorization.

14891665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219.

The product of its digits is 51840, while the sum is 40.

The square root of 14891665 is about 3858.9720133735. The cubic root of 14891665 is about 246.0260454500.

The spelling of 14891665 in words is "fourteen million, eight hundred ninety-one thousand, six hundred sixty-five".