1266896763 has 48 divisors (see below), whose sum is σ = 2225059200. Its totient is φ = 684599040.

The previous prime is 1266896749. The next prime is 1266896767. The reversal of 1266896763 is 3676986621.

It is not a de Polignac number, because 1266896763 - 2⁶ = 1266896699 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1266896767) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12168 + ... + 51786.

It is an arithmetic number, because the mean of its divisors is an integer number (46355400).

Almost surely, 2^1266896763 is an apocalyptic number.

1266896763 is a deficient number, since it is larger than the sum of its proper divisors (958162437).

1266896763 is a wasteful number, since it uses less digits than its factorization.

1266896763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39672 (or 39669 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 1266896763 is about 35593.4932677308. The cubic root of 1266896763 is about 1082.0493674823.

The spelling of 1266896763 in words is "one billion, two hundred sixty-six million, eight hundred ninety-six thousand, seven hundred sixty-three".