647003 has 8 divisors (see below), whose sum is σ = 783072. Its totient is φ = 521856.

The previous prime is 646993. The next prime is 647011. The reversal of 647003 is 300746.

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

It is a cyclic number.

It is not a de Polignac number, because 647003 - 2¹⁰ = 645979 is a prime.

It is a super-2 number, since 2×647003² = 837225764018, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 7 and base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647003.

It is not an unprimeable number, because it can be changed into a prime (647033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600 + ... + 2837.

It is an arithmetic number, because the mean of its divisors is an integer number (97884).

2⁶⁴⁷⁰⁰³ is an apocalyptic number.

647003 is a deficient number, since it is larger than the sum of its proper divisors (136069).

647003 is a wasteful number, since it uses less digits than its factorization.

647003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 647003 is about 804.3649669149. The cubic root of 647003 is about 86.4905711041.

Adding to 647003 its reverse (300746), we get a palindrome (947749).

The spelling of 647003 in words is "six hundred forty-seven thousand, three".