6728425 has 24 divisors (see below), whose sum is σ = 9329760. Its totient is φ = 4771200.

The previous prime is 6728401. The next prime is 6728437. The reversal of 6728425 is 5248276.

It is a de Polignac number, because none of the positive numbers 2^k-6728425 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 11541 + ... + 12109.

It is an arithmetic number, because the mean of its divisors is an integer number (388740).

Almost surely, 2^6728425 is an apocalyptic number.

It is an amenable number.

6728425 is a deficient number, since it is larger than the sum of its proper divisors (2601335).

6728425 is a wasteful number, since it uses less digits than its factorization.

6728425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 628 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 6728425 is about 2593.9207775104. The cubic root of 6728425 is about 188.7865885241.

The spelling of 6728425 in words is "six million, seven hundred twenty-eight thousand, four hundred twenty-five".