1266875063 has 16 divisors (see below), whose sum is σ = 1328870400. Its totient is φ = 1206213120.

The previous prime is 1266875053. The next prime is 1266875087. The reversal of 1266875063 is 3605786621.

It is a cyclic number.

It is not a de Polignac number, because 1266875063 - 2²⁰ = 1265826487 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266875053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760970 + ... + 762632.

It is an arithmetic number, because the mean of its divisors is an integer number (83054400).

Almost surely, 2^1266875063 is an apocalyptic number.

1266875063 is a deficient number, since it is larger than the sum of its proper divisors (61995337).

1266875063 is a wasteful number, since it uses less digits than its factorization.

1266875063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 1266875063 is about 35593.1884354296. The cubic root of 1266875063 is about 1082.0431894979.

The spelling of 1266875063 in words is "one billion, two hundred sixty-six million, eight hundred seventy-five thousand, sixty-three".