16340665 has 24 divisors (see below), whose sum is σ = 22603968. Its totient is φ = 11244960.

The previous prime is 16340663. The next prime is 16340671. The reversal of 16340665 is 56604361.

It is not a de Polignac number, because 16340665 - 2¹ = 16340663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16340663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19444 + ... + 20266.

It is an arithmetic number, because the mean of its divisors is an integer number (941832).

Almost surely, 2^16340665 is an apocalyptic number.

It is an amenable number.

16340665 is a deficient number, since it is larger than the sum of its proper divisors (6263303).

16340665 is a wasteful number, since it uses less digits than its factorization.

16340665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 16340665 is about 4042.3588410729. The cubic root of 16340665 is about 253.7600447381.

The spelling of 16340665 in words is "sixteen million, three hundred forty thousand, six hundred sixty-five".