654003 has 18 divisors (see below), whose sum is σ = 1099644. Its totient is φ = 373464.

The previous prime is 654001. The next prime is 654011. The reversal of 654003 is 300456.

It is a happy number.

It is not a de Polignac number, because 654003 - 2¹ = 654001 is a prime.

It is an Ulam number.

654003 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654003.

It is not an unprimeable number, because it can be changed into a prime (654001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 301 + ... + 1182.

2⁶⁵⁴⁰⁰³ is an apocalyptic number.

654003 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

654003 is a deficient number, since it is larger than the sum of its proper divisors (445641).

654003 is a wasteful number, since it uses less digits than its factorization.

654003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 654003 is about 808.7045195867. The cubic root of 654003 is about 86.8013700790.

Adding to 654003 its reverse (300456), we get a palindrome (954459).

The spelling of 654003 in words is "six hundred fifty-four thousand, three".