6428757 has 8 divisors (see below), whose sum is σ = 8584576. Its totient is φ = 4279392.

The previous prime is 6428743. The next prime is 6428761. The reversal of 6428757 is 7578246.

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

It is not a de Polignac number, because 6428757 - 2⁶ = 6428693 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 (6428767) 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, 1668 + ... + 3954.

It is an arithmetic number, because the mean of its divisors is an integer number (1073072).

Almost surely, 2^6428757 is an apocalyptic number.

It is an amenable number.

6428757 is a deficient number, since it is larger than the sum of its proper divisors (2155819).

6428757 is a wasteful number, since it uses less digits than its factorization.

6428757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227.

The product of its digits is 94080, while the sum is 39.

The square root of 6428757 is about 2535.4993591007. The cubic root of 6428757 is about 185.9412174056.

The spelling of 6428757 in words is "six million, four hundred twenty-eight thousand, seven hundred fifty-seven".