1266973 has 4 divisors (see below), whose sum is σ = 1270620. Its totient is φ = 1263328.

The previous prime is 1266953. The next prime is 1267009. The reversal of 1266973 is 3796621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 708964 + 558009 = 842^2 + 747^2 .

It is a cyclic number.

It is not a de Polignac number, because 1266973 - 2¹³ = 1258781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240 + ... + 2017.

It is an arithmetic number, because the mean of its divisors is an integer number (317655).

2^1266973 is an apocalyptic number.

It is an amenable number.

1266973 is a deficient number, since it is larger than the sum of its proper divisors (3647).

1266973 is an equidigital number, since it uses as much as digits as its factorization.

1266973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646.

The product of its digits is 13608, while the sum is 34.

The square root of 1266973 is about 1125.5989516697. The cubic root of 1266973 is about 108.2071071577.

The spelling of 1266973 in words is "one million, two hundred sixty-six thousand, nine hundred seventy-three".