1263583 has 2 divisors, whose sum is σ = 1263584. Its totient is φ = 1263582.

The previous prime is 1263569. The next prime is 1263599. The reversal of 1263583 is 3853621.

It is a weak prime.

It is an emirp because it is prime and its reverse (3853621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1263583 - 2⁹ = 1263071 is a prime.

1263583 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631791 + 631792.

It is an arithmetic number, because the mean of its divisors is an integer number (631792).

2^1263583 is an apocalyptic number.

1263583 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263583 is an equidigital number, since it uses as much as digits as its factorization.

1263583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 1263583 is about 1124.0920780790. The cubic root of 1263583 is about 108.1105121644.

The spelling of 1263583 in words is "one million, two hundred sixty-three thousand, five hundred eighty-three".