6447276 has 96 divisors (see below), whose sum is σ = 18735360. Its totient is φ = 1924560.

The previous prime is 6447271. The next prime is 6447277. The reversal of 6447276 is 6727446.

6447276 is a `hidden beast` number, since 644 + 7 + 2 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 6⁶ + 4 + 4¹¹ + 7 + 2¹⁹ + 7⁴ + 6⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 6447276.

It is not an unprimeable number, because it can be changed into a prime (6447271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96195 + ... + 96261.

It is an arithmetic number, because the mean of its divisors is an integer number (195160).

Almost surely, 2^6447276 is an apocalyptic number.

6447276 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6447276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9367680).

6447276 is an abundant number, since it is smaller than the sum of its proper divisors (12288084).

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

6447276 is a wasteful number, since it uses less digits than its factorization.

6447276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 83 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 6447276 is about 2539.1486762299. The cubic root of 6447276 is about 186.1195901057.

The spelling of 6447276 in words is "six million, four hundred forty-seven thousand, two hundred seventy-six".