1266676763 has 16 divisors (see below), whose sum is σ = 1401557472. Its totient is φ = 1144660000.

The previous prime is 1266676753. The next prime is 1266676793. The reversal of 1266676763 is 3676766621.

It is not a de Polignac number, because 1266676763 - 2⁶ = 1266676699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266676753) 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, 227513 + ... + 233013.

It is an arithmetic number, because the mean of its divisors is an integer number (87597342).

Almost surely, 2^1266676763 is an apocalyptic number.

1266676763 is a deficient number, since it is larger than the sum of its proper divisors (134880709).

1266676763 is an equidigital number, since it uses as much as digits as its factorization.

1266676763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707 (or 5685 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 50.

The square root of 1266676763 is about 35590.4026810600. The cubic root of 1266676763 is about 1081.9867302707.

The spelling of 1266676763 in words is "one billion, two hundred sixty-six million, six hundred seventy-six thousand, seven hundred sixty-three".