13641487 has 8 divisors (see below), whose sum is σ = 14396400. Its totient is φ = 12890304.

The previous prime is 13641431. The next prime is 13641499. The reversal of 13641487 is 78414631.

It is a happy number.

13641487 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13641487 - 2⁷ = 13641359 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 (13611487) 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, 9939 + ... + 11227.

It is an arithmetic number, because the mean of its divisors is an integer number (1799550).

Almost surely, 2^13641487 is an apocalyptic number.

13641487 is a deficient number, since it is larger than the sum of its proper divisors (754913).

13641487 is a wasteful number, since it uses less digits than its factorization.

13641487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865.

The product of its digits is 16128, while the sum is 34.

The square root of 13641487 is about 3693.4383709492. The cubic root of 13641487 is about 238.9391078687.

The spelling of 13641487 in words is "thirteen million, six hundred forty-one thousand, four hundred eighty-seven".