1265886 has 12 divisors (see below), whose sum is σ = 2742792. Its totient is φ = 421956.

The previous prime is 1265867. The next prime is 1265899. The reversal of 1265886 is 6885621.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1265886.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 35146 + ... + 35181.

It is an arithmetic number, because the mean of its divisors is an integer number (228566).

2^1265886 is an apocalyptic number.

1265886 is an abundant number, since it is smaller than the sum of its proper divisors (1476906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265886 is a wasteful number, since it uses less digits than its factorization.

1265886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70335 (or 70332 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1265886 is about 1125.1159940202. The cubic root of 1265886 is about 108.1761528598.

It can be divided in two parts, 126588 and 6, that multiplied together give a triangular number (759528 = T₁₂₃₂).

The spelling of 1265886 in words is "one million, two hundred sixty-five thousand, eight hundred eighty-six".