1266763 has 2 divisors, whose sum is σ = 1266764. Its totient is φ = 1266762.

The previous prime is 1266761. The next prime is 1266767. The reversal of 1266763 is 3676621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266763 - 2¹ = 1266761 is a prime.

Together with 1266761, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1266761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633381 + 633382.

It is an arithmetic number, because the mean of its divisors is an integer number (633382).

2^1266763 is an apocalyptic number.

1266763 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266763 is an equidigital number, since it uses as much as digits as its factorization.

1266763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 1266763 is about 1125.5056641350. The cubic root of 1266763 is about 108.2011284068.

It can be divided in two parts, 126 and 6763, that added together give a square (6889 = 83²).

The spelling of 1266763 in words is "one million, two hundred sixty-six thousand, seven hundred sixty-three".