13550066 has 16 divisors (see below), whose sum is σ = 21176640. Its totient is φ = 6496560.

The previous prime is 13550057. The next prime is 13550077. The reversal of 13550066 is 66005531.

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 7 ways as a sum of consecutive naturals, for example, 3965 + ... + 6543.

It is an arithmetic number, because the mean of its divisors is an integer number (1323540).

Almost surely, 2^13550066 is an apocalyptic number.

13550066 is a deficient number, since it is larger than the sum of its proper divisors (7626574).

13550066 is a wasteful number, since it uses less digits than its factorization.

13550066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 13550066 is about 3681.0414287264. The cubic root of 13550066 is about 238.4041458560.

Adding to 13550066 its reverse (66005531), we get a palindrome (79555597).

The spelling of 13550066 in words is "thirteen million, five hundred fifty thousand, sixty-six".