13705066 has 4 divisors (see below), whose sum is σ = 20557602. Its totient is φ = 6852532.

The previous prime is 13705057. The next prime is 13705067. The reversal of 13705066 is 66050731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66050731 = 557 ⋅118583.

It can be written as a sum of positive squares in only one way, i.e., 7177041 + 6528025 = 2679^2 + 2555^2 .

It is not an unprimeable number, because it can be changed into a prime (13705067) by changing a digit.

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 as a sum of consecutive naturals, namely, 3426265 + ... + 3426268.

Almost surely, 2^13705066 is an apocalyptic number.

13705066 is a deficient number, since it is larger than the sum of its proper divisors (6852536).

13705066 is an equidigital number, since it uses as much as digits as its factorization.

13705066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6852535.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 13705066 is about 3702.0353861086. The cubic root of 13705066 is about 239.3097412019.

Adding to 13705066 its reverse (66050731), we get a palindrome (79755797).

The spelling of 13705066 in words is "thirteen million, seven hundred five thousand, sixty-six".