13201665 has 16 divisors (see below), whose sum is σ = 21168000. Its totient is φ = 7025792.

The previous prime is 13201651. The next prime is 13201679. The reversal of 13201665 is 56610231.

It is an interprime number because it is at equal distance from previous prime (13201651) and next prime (13201679).

It is a cyclic number.

It is not a de Polignac number, because 13201665 - 2⁴ = 13201649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12061 + ... + 13109.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^13201665 is an apocalyptic number.

13201665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13201665 is a deficient number, since it is larger than the sum of its proper divisors (7966335).

13201665 is a wasteful number, since it uses less digits than its factorization.

13201665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13201665 is about 3633.4095557754. The cubic root of 13201665 is about 236.3430864105.

Adding to 13201665 its reverse (56610231), we get a palindrome (69811896).

The spelling of 13201665 in words is "thirteen million, two hundred one thousand, six hundred sixty-five".