6347639648 has 48 divisors (see below), whose sum is σ = 14429477664. Its totient is φ = 2692362240.

The previous prime is 6347639647. The next prime is 6347639663. The reversal of 6347639648 is 8469367436.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 6347639593 and 6347639602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6347639647) 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, 124343 + ... + 167798.

It is an arithmetic number, because the mean of its divisors is an integer number (300614118).

Almost surely, 2^6347639648 is an apocalyptic number.

It is an amenable number.

6347639648 is an abundant number, since it is smaller than the sum of its proper divisors (8081838016).

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

6347639648 is a wasteful number, since it uses less digits than its factorization.

6347639648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292255 (or 292247 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 56.

The square root of 6347639648 is about 79672.0757103767. The cubic root of 6347639648 is about 1851.5584285301.

The spelling of 6347639648 in words is "six billion, three hundred forty-seven million, six hundred thirty-nine thousand, six hundred forty-eight".