1263513 has 8 divisors (see below), whose sum is σ = 1730368. Its totient is φ = 819504.

The previous prime is 1263511. The next prime is 1263539. The reversal of 1263513 is 3153621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1263513 - 2¹ = 1263511 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1263513.

It is not an unprimeable number, because it can be changed into a prime (1263511) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5581 + ... + 5802.

It is an arithmetic number, because the mean of its divisors is an integer number (216296).

2^1263513 is an apocalyptic number.

It is an amenable number.

1263513 is a deficient number, since it is larger than the sum of its proper divisors (466855).

1263513 is a wasteful number, since it uses less digits than its factorization.

1263513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11423.

The product of its digits is 540, while the sum is 21.

The square root of 1263513 is about 1124.0609414084. The cubic root of 1263513 is about 108.1085157580.

The spelling of 1263513 in words is "one million, two hundred sixty-three thousand, five hundred thirteen".