1266961 has 4 divisors (see below), whose sum is σ = 1270000. Its totient is φ = 1263924.

The previous prime is 1266953. The next prime is 1267009. The reversal of 1266961 is 1696621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1696621 = 41 ⋅41381.

It is a cyclic number.

It is not a de Polignac number, because 1266961 - 2³ = 1266953 is a prime.

It is a Duffinian number.

1266961 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1266931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771 + ... + 1768.

It is an arithmetic number, because the mean of its divisors is an integer number (317500).

2^1266961 is an apocalyptic number.

It is an amenable number.

1266961 is a deficient number, since it is larger than the sum of its proper divisors (3039).

1266961 is an equidigital number, since it uses as much as digits as its factorization.

1266961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038.

The product of its digits is 3888, while the sum is 31.

The square root of 1266961 is about 1125.5936211617. The cubic root of 1266961 is about 108.2067655326.

The spelling of 1266961 in words is "one million, two hundred sixty-six thousand, nine hundred sixty-one".