1266751 has 2 divisors, whose sum is σ = 1266752. Its totient is φ = 1266750.

The previous prime is 1266743. The next prime is 1266757. The reversal of 1266751 is 1576621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1266751 - 2³ = 1266743 is a prime.

It is the 1126-th Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266757) by changing a digit.

It is a nontrivial repunit in base 1125.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633375 + 633376.

It is an arithmetic number, because the mean of its divisors is an integer number (633376).

2^1266751 is an apocalyptic number.

1266751 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266751 is an equidigital number, since it uses as much as digits as its factorization.

1266751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 28.

The square root of 1266751 is about 1125.5003331852. The cubic root of 1266751 is about 108.2007867439.

The spelling of 1266751 in words is "one million, two hundred sixty-six thousand, seven hundred fifty-one".