6397278 has 16 divisors (see below), whose sum is σ = 12821376. Its totient is φ = 2127960.

The previous prime is 6397273. The next prime is 6397283. The reversal of 6397278 is 8727936.

It is an interprime number because it is at equal distance from previous prime (6397273) and next prime (6397283).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397273) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3375 + ... + 4917.

It is an arithmetic number, because the mean of its divisors is an integer number (801336).

Almost surely, 2^6397278 is an apocalyptic number.

6397278 is an abundant number, since it is smaller than the sum of its proper divisors (6424098).

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

6397278 is a wasteful number, since it uses less digits than its factorization.

6397278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239.

The product of its digits is 127008, while the sum is 42.

The square root of 6397278 is about 2529.2840884329. The cubic root of 6397278 is about 185.6372279353.

The spelling of 6397278 in words is "six million, three hundred ninety-seven thousand, two hundred seventy-eight".