13520641 has 8 divisors (see below), whose sum is σ = 14097600. Its totient is φ = 12951120.

The previous prime is 13520603. The next prime is 13520653. The reversal of 13520641 is 14602531.

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

It is a cyclic number.

It is not a de Polignac number, because 13520641 - 2¹⁷ = 13389569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13523641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2020 + ... + 5578.

It is an arithmetic number, because the mean of its divisors is an integer number (1762200).

Almost surely, 2^13520641 is an apocalyptic number.

It is an amenable number.

13520641 is a deficient number, since it is larger than the sum of its proper divisors (576959).

13520641 is a wasteful number, since it uses less digits than its factorization.

13520641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3719.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 13520641 is about 3677.0424256459. The cubic root of 13520641 is about 238.2314498700.

It can be divided in two parts, 13520 and 641, that added together give a square (14161 = 119²).

The spelling of 13520641 in words is "thirteen million, five hundred twenty thousand, six hundred forty-one".