13663147 has 16 divisors (see below), whose sum is σ = 15069600. Its totient is φ = 12337920.

The previous prime is 13663123. The next prime is 13663159. The reversal of 13663147 is 74136631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13663147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13660147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75397 + ... + 75577.

It is an arithmetic number, because the mean of its divisors is an integer number (941850).

Almost surely, 2^13663147 is an apocalyptic number.

13663147 is a deficient number, since it is larger than the sum of its proper divisors (1406453).

13663147 is a wasteful number, since it uses less digits than its factorization.

13663147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its digits is 9072, while the sum is 31.

The square root of 13663147 is about 3696.3694349997. The cubic root of 13663147 is about 239.0655037742.

Adding to 13663147 its reverse (74136631), we get a palindrome (87799778).

The spelling of 13663147 in words is "thirteen million, six hundred sixty-three thousand, one hundred forty-seven".