13663898 has 8 divisors (see below), whose sum is σ = 20536608. Its totient is φ = 6818364.

The previous prime is 13663883. The next prime is 13663931. The reversal of 13663898 is 89836631.

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

It is an unprimeable number.

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, 5486 + ... + 7577.

It is an arithmetic number, because the mean of its divisors is an integer number (2567076).

Almost surely, 2^13663898 is an apocalyptic number.

13663898 is a deficient number, since it is larger than the sum of its proper divisors (6872710).

13663898 is a wasteful number, since it uses less digits than its factorization.

13663898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13588.

The product of its digits is 186624, while the sum is 44.

The square root of 13663898 is about 3696.4710197701. The cubic root of 13663898 is about 239.0698838023.

The spelling of 13663898 in words is "thirteen million, six hundred sixty-three thousand, eight hundred ninety-eight".