1266905768 has 32 divisors (see below), whose sum is σ = 2475932160. Its totient is φ = 607055040.

The previous prime is 1266905749. The next prime is 1266905771. The reversal of 1266905768 is 8675096621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746 + ... + 50342.

It is an arithmetic number, because the mean of its divisors is an integer number (77372880).

Almost surely, 2^1266905768 is an apocalyptic number.

It is an amenable number.

1266905768 is a deficient number, since it is larger than the sum of its proper divisors (1209026392).

1266905768 is a wasteful number, since it uses less digits than its factorization.

1266905768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49737 (or 49733 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 1266905768 is about 35593.6197653456. The cubic root of 1266905768 is about 1082.0519311827.

The spelling of 1266905768 in words is "one billion, two hundred sixty-six million, nine hundred five thousand, seven hundred sixty-eight".