6428787 has 8 divisors (see below), whose sum is σ = 8803536. Its totient is φ = 4169952.

The previous prime is 6428777. The next prime is 6428789. The reversal of 6428787 is 7878246.

6428787 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6428787 - 2¹⁹ = 5904499 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6428789) 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, 28848 + ... + 29069.

It is an arithmetic number, because the mean of its divisors is an integer number (1100442).

Almost surely, 2^6428787 is an apocalyptic number.

6428787 is a deficient number, since it is larger than the sum of its proper divisors (2374749).

6428787 is a wasteful number, since it uses less digits than its factorization.

6428787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57957.

The product of its digits is 150528, while the sum is 42.

The square root of 6428787 is about 2535.5052750882. The cubic root of 6428787 is about 185.9415066387.

The spelling of 6428787 in words is "six million, four hundred twenty-eight thousand, seven hundred eighty-seven".