1000263 has 16 divisors (see below), whose sum is σ = 1541376. Its totient is φ = 570240.

The previous prime is 1000253. The next prime is 1000273. The reversal of 1000263 is 3620001.

It is an interprime number because it is at equal distance from previous prime (1000253) and next prime (1000273).

It is not a de Polignac number, because 1000263 - 2⁵ = 1000231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000213) 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 15 ways as a sum of consecutive naturals, for example, 331 + ... + 1452.

It is an arithmetic number, because the mean of its divisors is an integer number (96336).

2^1000263 is an apocalyptic number.

1000263 is a deficient number, since it is larger than the sum of its proper divisors (541113).

1000263 is a wasteful number, since it uses less digits than its factorization.

1000263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1000263 is about 1000.1314913550. The cubic root of 1000263 is about 100.0087658982.

Adding to 1000263 its reverse (3620001), we get a palindrome (4620264).

The spelling of 1000263 in words is "one million, two hundred sixty-three", and thus it is an aban number.