13966066 has 4 divisors (see below), whose sum is σ = 20949102. Its totient is φ = 6983032.

The previous prime is 13966039. The next prime is 13966091. The reversal of 13966066 is 66066931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12047841 + 1918225 = 3471^2 + 1385^2 .

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 as a sum of consecutive naturals, namely, 3491515 + ... + 3491518.

Almost surely, 2^13966066 is an apocalyptic number.

13966066 is a deficient number, since it is larger than the sum of its proper divisors (6983036).

13966066 is an equidigital number, since it uses as much as digits as its factorization.

13966066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6983035.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 13966066 is about 3737.1200141285. The cubic root of 13966066 is about 240.8193408563.

The spelling of 13966066 in words is "thirteen million, nine hundred sixty-six thousand, sixty-six".