13361641 has 4 divisors (see below), whose sum is σ = 13369300. Its totient is φ = 13353984.

The previous prime is 13361639. The next prime is 13361669. The reversal of 13361641 is 14616331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14616331 = 487 ⋅30013.

It can be written as a sum of positive squares in 2 ways, for example, as 1390041 + 11971600 = 1179^2 + 3460^2 .

It is a cyclic number.

It is not a de Polignac number, because 13361641 - 2¹ = 13361639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13361611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205 + ... + 5173.

It is an arithmetic number, because the mean of its divisors is an integer number (3342325).

Almost surely, 2^13361641 is an apocalyptic number.

It is an amenable number.

13361641 is a deficient number, since it is larger than the sum of its proper divisors (7659).

13361641 is an equidigital number, since it uses as much as digits as its factorization.

13361641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7658.

The product of its digits is 1296, while the sum is 25.

The square root of 13361641 is about 3655.3578484192. The cubic root of 13361641 is about 237.2939139299.

Adding to 13361641 its reverse (14616331), we get a palindrome (27977972).

The spelling of 13361641 in words is "thirteen million, three hundred sixty-one thousand, six hundred forty-one".