6427278 has 72 divisors (see below), whose sum is σ = 16556904. Its totient is φ = 1789920.

The previous prime is 6427277. The next prime is 6427331. The reversal of 6427278 is 8727246.

6427278 is a `hidden beast` number, since 642 + 7 + 2 + 7 + 8 = 666.

Its product of digits (37632) is a multiple of the sum of its prime divisors (256).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6427273) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28201 + ... + 28427.

It is an arithmetic number, because the mean of its divisors is an integer number (229957).

Almost surely, 2^6427278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6427278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8278452).

6427278 is an abundant number, since it is smaller than the sum of its proper divisors (10129626).

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

6427278 is a wasteful number, since it uses less digits than its factorization.

6427278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 256 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 6427278 is about 2535.2076838003. The cubic root of 6427278 is about 185.9269570982.

Subtracting 6427278 from its reverse (8727246), we obtain a cube (2299968 = 132³).

The spelling of 6427278 in words is "six million, four hundred twenty-seven thousand, two hundred seventy-eight".