6428566 has 8 divisors (see below), whose sum is σ = 9848160. Its totient is φ = 3145848.

The previous prime is 6428551. The next prime is 6428573. The reversal of 6428566 is 6658246.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34101 + ... + 34288.

It is an arithmetic number, because the mean of its divisors is an integer number (1231020).

Almost surely, 2^6428566 is an apocalyptic number.

6428566 is a deficient number, since it is larger than the sum of its proper divisors (3419594).

6428566 is a wasteful number, since it uses less digits than its factorization.

6428566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68438.

The product of its digits is 69120, while the sum is 37.

The square root of 6428566 is about 2535.4616936566. The cubic root of 6428566 is about 185.9393759338.

The spelling of 6428566 in words is "six million, four hundred twenty-eight thousand, five hundred sixty-six".