13635481 has 8 divisors (see below), whose sum is σ = 14719680. Its totient is φ = 12592272.

The previous prime is 13635467. The next prime is 13635487. The reversal of 13635481 is 18453631.

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 13635481 - 2⁷ = 13635353 is a prime.

It is a super-2 number, since 2×13635481² = 371852684202722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13635487) 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, 9555 + ... + 10888.

It is an arithmetic number, because the mean of its divisors is an integer number (1839960).

Almost surely, 2^13635481 is an apocalyptic number.

It is an amenable number.

13635481 is a deficient number, since it is larger than the sum of its proper divisors (1084199).

13635481 is a wasteful number, since it uses less digits than its factorization.

13635481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20495.

The product of its digits is 8640, while the sum is 31.

The square root of 13635481 is about 3692.6252179175. The cubic root of 13635481 is about 238.9040364491.

The spelling of 13635481 in words is "thirteen million, six hundred thirty-five thousand, four hundred eighty-one".