646000503 has 16 divisors (see below), whose sum is σ = 872446176. Its totient is φ = 425134080.

The previous prime is 646000489. The next prime is 646000507. The reversal of 646000503 is 305000646.

It is not a de Polignac number, because 646000503 - 2¹⁰ = 645999479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646000507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119875 + ... + 125147.

It is an arithmetic number, because the mean of its divisors is an integer number (54527886).

Almost surely, 2^646000503 is an apocalyptic number.

646000503 is a deficient number, since it is larger than the sum of its proper divisors (226445673).

646000503 is a wasteful number, since it uses less digits than its factorization.

646000503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5794.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 646000503 is about 25416.5399494109. The cubic root of 646000503 is about 864.4587715414.

The spelling of 646000503 in words is "six hundred forty-six million, five hundred three", and thus it is an aban number.