6428503 has 4 divisors (see below), whose sum is σ = 6438280. Its totient is φ = 6418728.

The previous prime is 6428489. The next prime is 6428551. The reversal of 6428503 is 3058246.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6428503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3825 + ... + 5242.

It is an arithmetic number, because the mean of its divisors is an integer number (1609570).

Almost surely, 2^6428503 is an apocalyptic number.

6428503 is a deficient number, since it is larger than the sum of its proper divisors (9777).

6428503 is an equidigital number, since it uses as much as digits as its factorization.

6428503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 6428503 is about 2535.4492698534. The cubic root of 6428503 is about 185.9387685293.

The spelling of 6428503 in words is "six million, four hundred twenty-eight thousand, five hundred three".