13283665 has 16 divisors (see below), whose sum is σ = 16405200. Its totient is φ = 10321920.

The previous prime is 13283663. The next prime is 13283671. The reversal of 13283665 is 56638231.

13283665 = 321² + 322² + ... + 417².

It can be written as a sum of positive squares in 8 ways, for example, as 1498176 + 11785489 = 1224^2 + 3433^2 .

It is not a de Polignac number, because 13283665 - 2¹ = 13283663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13283665.

It is not an unprimeable number, because it can be changed into a prime (13283663) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 29361 + ... + 29809.

It is an arithmetic number, because the mean of its divisors is an integer number (1025325).

Almost surely, 2^13283665 is an apocalyptic number.

It is an amenable number.

13283665 is a deficient number, since it is larger than the sum of its proper divisors (3121535).

13283665 is an equidigital number, since it uses as much as digits as its factorization.

13283665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its digits is 25920, while the sum is 34.

The square root of 13283665 is about 3644.6762544841. The cubic root of 13283665 is about 236.8314123264.

The spelling of 13283665 in words is "thirteen million, two hundred eighty-three thousand, six hundred sixty-five".