1266112066 has 4 divisors (see below), whose sum is σ = 1899168102. Its totient is φ = 633056032.

The previous prime is 1266112019. The next prime is 1266112079. The reversal of 1266112066 is 6602116621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6602116621 = 811 ⋅8140711.

It can be written as a sum of positive squares in only one way, i.e., 1265580625 + 531441 = 35575^2 + 729^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316528015 + ... + 316528018.

Almost surely, 2^1266112066 is an apocalyptic number.

1266112066 is a deficient number, since it is larger than the sum of its proper divisors (633056036).

1266112066 is an equidigital number, since it uses as much as digits as its factorization.

1266112066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633056035.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1266112066 is about 35582.4685203261. The cubic root of 1266112066 is about 1081.8259195844.

Adding to 1266112066 its reverse (6602116621), we get a palindrome (7868228687).

The spelling of 1266112066 in words is "one billion, two hundred sixty-six million, one hundred twelve thousand, sixty-six".