6447826476 has 240 divisors, whose sum is σ = 21463928640. Its totient is φ = 1641669120.

The previous prime is 6447826421. The next prime is 6447826477. The reversal of 6447826476 is 6746287446.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6447826477) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 851266 + ... + 858806.

It is an arithmetic number, because the mean of its divisors is an integer number (89433036).

Almost surely, 2^6447826476 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 6447826476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10731964320).

6447826476 is an abundant number, since it is smaller than the sum of its proper divisors (15016102164).

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

6447826476 is a wasteful number, since it uses less digits than its factorization.

6447826476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7606 (or 7595 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 54.

The square root of 6447826476 is about 80298.3591115036. The cubic root of 6447826476 is about 1861.2488699136.

The spelling of 6447826476 in words is "six billion, four hundred forty-seven million, eight hundred twenty-six thousand, four hundred seventy-six".