13655641 has 4 divisors (see below), whose sum is σ = 14458932. Its totient is φ = 12852352.

The previous prime is 13655633. The next prime is 13655647. The reversal of 13655641 is 14655631.

13655641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14655631 = 19 ⋅771349.

It can be written as a sum of positive squares in 2 ways, for example, as 7425625 + 6230016 = 2725^2 + 2496^2 .

It is a cyclic number.

It is not a de Polignac number, because 13655641 - 2³ = 13655633 is a prime.

It is a super-2 number, since 2×13655641² = 372953062241762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13655647) 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, 401620 + ... + 401653.

It is an arithmetic number, because the mean of its divisors is an integer number (3614733).

Almost surely, 2^13655641 is an apocalyptic number.

It is an amenable number.

13655641 is a deficient number, since it is larger than the sum of its proper divisors (803291).

13655641 is an equidigital number, since it uses as much as digits as its factorization.

13655641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803290.

The product of its digits is 10800, while the sum is 31.

The square root of 13655641 is about 3695.3539749258. The cubic root of 13655641 is about 239.0217180010.

The spelling of 13655641 in words is "thirteen million, six hundred fifty-five thousand, six hundred forty-one".