13757641 has 4 divisors (see below), whose sum is σ = 14566932. Its totient is φ = 12948352.

The previous prime is 13757621. The next prime is 13757647. The reversal of 13757641 is 14675731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14675731 = 7 ⋅2096533.

It can be written as a sum of positive squares in 2 ways, for example, as 11289600 + 2468041 = 3360^2 + 1571^2 .

It is a cyclic number.

It is not a de Polignac number, because 13757641 - 2²¹ = 11660489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13757597 and 13757606.

It is not an unprimeable number, because it can be changed into a prime (13757647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404620 + ... + 404653.

It is an arithmetic number, because the mean of its divisors is an integer number (3641733).

Almost surely, 2^13757641 is an apocalyptic number.

It is an amenable number.

13757641 is a deficient number, since it is larger than the sum of its proper divisors (809291).

13757641 is an equidigital number, since it uses as much as digits as its factorization.

13757641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809290.

The product of its digits is 17640, while the sum is 34.

The square root of 13757641 is about 3709.1294126789. The cubic root of 13757641 is about 239.6153618949.

The spelling of 13757641 in words is "thirteen million, seven hundred fifty-seven thousand, six hundred forty-one".