1268861 has 12 divisors (see below), whose sum is σ = 1452672. Its totient is φ = 1098000.

The previous prime is 1268849. The next prime is 1268867. The reversal of 1268861 is 1688621.

It is not a de Polignac number, because 1268861 - 2⁶ = 1268797 is a prime.

It is a super-2 number, since 2×1268861² = 3220016474642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20771 + ... + 20831.

It is an arithmetic number, because the mean of its divisors is an integer number (121056).

2^1268861 is an apocalyptic number.

1268861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1268861 is a deficient number, since it is larger than the sum of its proper divisors (183811).

1268861 is an equidigital number, since it uses as much as digits as its factorization.

1268861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 103 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 1268861 is about 1126.4373040698. The cubic root of 1268861 is about 108.2608293298.

It can be divided in two parts, 1 and 268861, that added together give a palindrome (268862).

The spelling of 1268861 in words is "one million, two hundred sixty-eight thousand, eight hundred sixty-one".