6397215 has 32 divisors (see below), whose sum is σ = 11287296. Its totient is φ = 3068160.

The previous prime is 6397213. The next prime is 6397229. The reversal of 6397215 is 5127936.

It is not a de Polignac number, because 6397215 - 2¹ = 6397213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397211) 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 31 ways as a sum of consecutive naturals, for example, 22464 + ... + 22746.

It is an arithmetic number, because the mean of its divisors is an integer number (352728).

Almost surely, 2^6397215 is an apocalyptic number.

6397215 is a deficient number, since it is larger than the sum of its proper divisors (4890081).

6397215 is a wasteful number, since it uses less digits than its factorization.

6397215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439.

The product of its digits is 11340, while the sum is 33.

The square root of 6397215 is about 2529.2716342853. The cubic root of 6397215 is about 185.6366185520.

The spelling of 6397215 in words is "six million, three hundred ninety-seven thousand, two hundred fifteen".