6428387875 has 64 divisors (see below), whose sum is σ = 10303727616. Its totient is φ = 3891888000.

The previous prime is 6428387873. The next prime is 6428387879. The reversal of 6428387875 is 5787838246.

It is not a de Polignac number, because 6428387875 - 2¹ = 6428387873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6428387873) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 249340 + ... + 273910.

It is an arithmetic number, because the mean of its divisors is an integer number (160995744).

Almost surely, 2^6428387875 is an apocalyptic number.

6428387875 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6428387875 is a deficient number, since it is larger than the sum of its proper divisors (3875339741).

6428387875 is a wasteful number, since it uses less digits than its factorization.

6428387875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24629 (or 24619 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 58.

The square root of 6428387875 is about 80177.2279079291. The cubic root of 6428387875 is about 1859.3765855976.

The spelling of 6428387875 in words is "six billion, four hundred twenty-eight million, three hundred eighty-seven thousand, eight hundred seventy-five".