16653265 has 16 divisors (see below), whose sum is σ = 20995200. Its totient is φ = 12656512.

The previous prime is 16653239. The next prime is 16653269. The reversal of 16653265 is 56235661.

It is a cyclic number.

It is not a de Polignac number, because 16653265 - 2⁷ = 16653137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16653265.

It is not an unprimeable number, because it can be changed into a prime (16653269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20181 + ... + 20989.

It is an arithmetic number, because the mean of its divisors is an integer number (1312200).

Almost surely, 2^16653265 is an apocalyptic number.

It is an amenable number.

16653265 is a deficient number, since it is larger than the sum of its proper divisors (4341935).

16653265 is a wasteful number, since it uses less digits than its factorization.

16653265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016.

The product of its digits is 32400, while the sum is 34.

The square root of 16653265 is about 4080.8412122992. The cubic root of 16653265 is about 255.3679936148.

The spelling of 16653265 in words is "sixteen million, six hundred fifty-three thousand, two hundred sixty-five".