1268961 has 4 divisors (see below), whose sum is σ = 1691952. Its totient is φ = 845972.

The previous prime is 1268947. The next prime is 1268963. The reversal of 1268961 is 1698621.

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.

It is a cyclic number.

It is not a de Polignac number, because 1268961 - 2⁵ = 1268929 is a prime.

It is a super-2 number, since 2×1268961² = 3220524039042, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1268963) 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, 211491 + ... + 211496.

It is an arithmetic number, because the mean of its divisors is an integer number (422988).

2^1268961 is an apocalyptic number.

It is an amenable number.

1268961 is a deficient number, since it is larger than the sum of its proper divisors (422991).

1268961 is an equidigital number, since it uses as much as digits as its factorization.

1268961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422990.

The product of its digits is 5184, while the sum is 33.

The square root of 1268961 is about 1126.4816909298. The cubic root of 1268961 is about 108.2636732973.

The spelling of 1268961 in words is "one million, two hundred sixty-eight thousand, nine hundred sixty-one".