6398335256 has 8 divisors (see below), whose sum is σ = 11996878620. Its totient is φ = 3199167624.

The previous prime is 6398335219. The next prime is 6398335259. The reversal of 6398335256 is 6525338936.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6398335259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399895946 + ... + 399895961.

Almost surely, 2^6398335256 is an apocalyptic number.

It is an amenable number.

6398335256 is a deficient number, since it is larger than the sum of its proper divisors (5598543364).

6398335256 is a wasteful number, since it uses less digits than its factorization.

6398335256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799791913 (or 799791909 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 50.

The square root of 6398335256 is about 79989.5946733074. The cubic root of 6398335256 is about 1856.4745391277.

The spelling of 6398335256 in words is "six billion, three hundred ninety-eight million, three hundred thirty-five thousand, two hundred fifty-six".