6291471648 has 192 divisors, whose sum is σ = 21093488640. Its totient is φ = 1594214400.

The previous prime is 6291471623. The next prime is 6291471679. The reversal of 6291471648 is 8461741926.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 6291471597 and 6291471606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292693 + ... + 313451.

It is an arithmetic number, because the mean of its divisors is an integer number (109861920).

Almost surely, 2^6291471648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6291471648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10546744320).

6291471648 is an abundant number, since it is smaller than the sum of its proper divisors (14802016992).

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

6291471648 is a wasteful number, since it uses less digits than its factorization.

6291471648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20831 (or 20823 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 6291471648 is about 79318.7975703112. The cubic root of 6291471648 is about 1846.0809805045.

The spelling of 6291471648 in words is "six billion, two hundred ninety-one million, four hundred seventy-one thousand, six hundred forty-eight".