13271665 has 8 divisors (see below), whose sum is σ = 17373888. Its totient is φ = 9652080.

The previous prime is 13271663. The next prime is 13271669. The reversal of 13271665 is 56617231.

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

It is not a de Polignac number, because 13271665 - 2¹ = 13271663 is a prime.

It is a super-2 number, since 2×13271665² = 352274183744450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13271663) 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, 120597 + ... + 120706.

It is an arithmetic number, because the mean of its divisors is an integer number (2171736).

Almost surely, 2^13271665 is an apocalyptic number.

It is an amenable number.

13271665 is a deficient number, since it is larger than the sum of its proper divisors (4102223).

13271665 is a wasteful number, since it uses less digits than its factorization.

13271665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241319.

The product of its digits is 7560, while the sum is 31.

The square root of 13271665 is about 3643.0296457756. The cubic root of 13271665 is about 236.7600757598.

Adding to 13271665 its reverse (56617231), we get a palindrome (69888896).

It can be divided in two parts, 1327 and 1665, that added together give a palindrome (2992).

The spelling of 13271665 in words is "thirteen million, two hundred seventy-one thousand, six hundred sixty-five".