13662985 has 16 divisors (see below), whose sum is σ = 19840896. Its totient is φ = 8817408.

The previous prime is 13662983. The next prime is 13663009. The reversal of 13662985 is 58926631.

It is a cyclic number.

It is not a de Polignac number, because 13662985 - 2¹ = 13662983 is a prime.

It is a super-2 number, since 2×13662985² = 373354318220450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13662983) 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 15 ways as a sum of consecutive naturals, for example, 10887 + ... + 12076.

It is an arithmetic number, because the mean of its divisors is an integer number (1240056).

Almost surely, 2^13662985 is an apocalyptic number.

It is an amenable number.

13662985 is a deficient number, since it is larger than the sum of its proper divisors (6177911).

13662985 is a wasteful number, since it uses less digits than its factorization.

13662985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22992.

The product of its digits is 77760, while the sum is 40.

The square root of 13662985 is about 3696.3475215407. The cubic root of 13662985 is about 239.0645589268.

The spelling of 13662985 in words is "thirteen million, six hundred sixty-two thousand, nine hundred eighty-five".