6398856480 has 96 divisors (see below), whose sum is σ = 21217291200. Its totient is φ = 1616550912.

The previous prime is 6398856437. The next prime is 6398856487. The reversal of 6398856480 is 846588936.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 6398856480.

It is not an unprimeable number, because it can be changed into a prime (6398856487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341695 + ... + 359934.

It is an arithmetic number, because the mean of its divisors is an integer number (221013450).

Almost surely, 2^6398856480 is an apocalyptic number.

6398856480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6398856480 is an abundant number, since it is smaller than the sum of its proper divisors (14818434720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6398856480 is a wasteful number, since it uses less digits than its factorization.

6398856480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701666 (or 701658 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The square root of 6398856480 is about 79992.8526807239. The cubic root of 6398856480 is about 1856.5249487406.

The spelling of 6398856480 in words is "six billion, three hundred ninety-eight million, eight hundred fifty-six thousand, four hundred eighty".