1265636 has 12 divisors (see below), whose sum is σ = 2223228. Its totient is φ = 630432.

The previous prime is 1265623. The next prime is 1265639. The reversal of 1265636 is 6365621.

It can be written as a sum of positive squares in 2 ways, for example, as 732736 + 532900 = 856^2 + 730^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1265599 and 1265608.

It is not an unprimeable number, because it can be changed into a prime (1265639) 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, 1190 + ... + 1986.

It is an arithmetic number, because the mean of its divisors is an integer number (185269).

2^1265636 is an apocalyptic number.

It is an amenable number.

1265636 is a deficient number, since it is larger than the sum of its proper divisors (957592).

1265636 is a wasteful number, since it uses less digits than its factorization.

1265636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198 (or 1196 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 1265636 is about 1125.0048888783. The cubic root of 1265636 is about 108.1690311498.

The spelling of 1265636 in words is "one million, two hundred sixty-five thousand, six hundred thirty-six".