13641773 has 4 divisors (see below), whose sum is σ = 13649628. Its totient is φ = 13633920.

The previous prime is 13641763. The next prime is 13641781. The reversal of 13641773 is 37714631.

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: 37714631 = 31 ⋅1216601.

It can be written as a sum of positive squares in 2 ways, for example, as 9223369 + 4418404 = 3037^2 + 2102^2 .

It is a cyclic number.

It is not a de Polignac number, because 13641773 - 2⁸ = 13641517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13641713) 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, 38 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (3412407).

Almost surely, 2^13641773 is an apocalyptic number.

It is an amenable number.

13641773 is a deficient number, since it is larger than the sum of its proper divisors (7855).

13641773 is an equidigital number, since it uses as much as digits as its factorization.

13641773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7854.

The product of its digits is 10584, while the sum is 32.

The square root of 13641773 is about 3693.4770880567. The cubic root of 13641773 is about 238.9407776795.

The spelling of 13641773 in words is "thirteen million, six hundred forty-one thousand, seven hundred seventy-three".