1066503 has 4 divisors (see below), whose sum is σ = 1422008. Its totient is φ = 711000.

The previous prime is 1066447. The next prime is 1066511. The reversal of 1066503 is 3056601.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1066503 - 2¹⁰ = 1065479 is a prime.

It is a super-2 number, since 2×1066503² = 2274857298018, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1066503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177748 + ... + 177753.

It is an arithmetic number, because the mean of its divisors is an integer number (355502).

2^1066503 is an apocalyptic number.

1066503 is a deficient number, since it is larger than the sum of its proper divisors (355505).

1066503 is an equidigital number, since it uses as much as digits as its factorization.

1066503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355504.

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

The square root of 1066503 is about 1032.7163211647. The cubic root of 1066503 is about 102.1693649139.

The spelling of 1066503 in words is "one million, sixty-six thousand, five hundred three".