13265666 has 8 divisors (see below), whose sum is σ = 19935180. Its totient is φ = 6620608.

The previous prime is 13265663. The next prime is 13265677. The reversal of 13265666 is 66656231.

It can be written as a sum of positive squares in 2 ways, for example, as 13213225 + 52441 = 3635^2 + 229^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13265663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4691 + ... + 6966.

Almost surely, 2^13265666 is an apocalyptic number.

13265666 is a deficient number, since it is larger than the sum of its proper divisors (6669514).

13265666 is a wasteful number, since it uses less digits than its factorization.

13265666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12228.

The product of its digits is 38880, while the sum is 35.

The square root of 13265666 is about 3642.2061995444. The cubic root of 13265666 is about 236.7243972987.

It can be divided in two parts, 13265 and 666, that added together give a palindrome (13931).

The spelling of 13265666 in words is "thirteen million, two hundred sixty-five thousand, six hundred sixty-six".