1287363 has 16 divisors (see below), whose sum is σ = 2140416. Its totient is φ = 668640.

The previous prime is 1287361. The next prime is 1287371. The reversal of 1287363 is 3637821.

It is not a de Polignac number, because 1287363 - 2¹ = 1287361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1287363.

It is not an unprimeable number, because it can be changed into a prime (1287361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2556 + ... + 3017.

It is an arithmetic number, because the mean of its divisors is an integer number (133776).

2^1287363 is an apocalyptic number.

1287363 is a deficient number, since it is larger than the sum of its proper divisors (853053).

1287363 is a wasteful number, since it uses less digits than its factorization.

1287363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5594.

The product of its digits is 6048, while the sum is 30.

The square root of 1287363 is about 1134.6202007720. The cubic root of 1287363 is about 108.7844969170.

The spelling of 1287363 in words is "one million, two hundred eighty-seven thousand, three hundred sixty-three".