1306636 has 6 divisors (see below), whose sum is σ = 2286620. Its totient is φ = 653316.

The previous prime is 1306633. The next prime is 1306661. The reversal of 1306636 is 6366031.

It is a self number, because there is not a number n which added to its sum of digits gives 1306636.

It is not an unprimeable number, because it can be changed into a prime (1306633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163326 + ... + 163333.

2^1306636 is an apocalyptic number.

It is an amenable number.

1306636 is a deficient number, since it is larger than the sum of its proper divisors (979984).

1306636 is a wasteful number, since it uses less digits than its factorization.

1306636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326663 (or 326661 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 1306636 is about 1143.0817993477. The cubic root of 1306636 is about 109.3246779122.

The spelling of 1306636 in words is "one million, three hundred six thousand, six hundred thirty-six".