6396220 has 12 divisors (see below), whose sum is σ = 13432104. Its totient is φ = 2558480.

The previous prime is 6396191. The next prime is 6396223. The reversal of 6396220 is 226936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6396223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159886 + ... + 159925.

It is an arithmetic number, because the mean of its divisors is an integer number (1119342).

Almost surely, 2^6396220 is an apocalyptic number.

It is an amenable number.

6396220 is an abundant number, since it is smaller than the sum of its proper divisors (7035884).

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

6396220 is a wasteful number, since it uses less digits than its factorization.

6396220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319820 (or 319818 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 6396220 is about 2529.0749296927. The cubic root of 6396220 is about 185.6269936338.

It can be divided in two parts, 639 and 6220, that added together give a cube (6859 = 19³).

The spelling of 6396220 in words is "six million, three hundred ninety-six thousand, two hundred twenty".