6396918 has 32 divisors (see below), whose sum is σ = 14107392. Its totient is φ = 1917600.

The previous prime is 6396911. The next prime is 6396937. The reversal of 6396918 is 8196936.

It is a self number, because there is not a number n which added to its sum of digits gives 6396918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6396911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6328 + ... + 7268.

It is an arithmetic number, because the mean of its divisors is an integer number (440856).

Almost surely, 2^6396918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6396918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7053696).

6396918 is an abundant number, since it is smaller than the sum of its proper divisors (7710474).

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

6396918 is a wasteful number, since it uses less digits than its factorization.

6396918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060.

The product of its digits is 69984, while the sum is 42.

The square root of 6396918 is about 2529.2129210488. The cubic root of 6396918 is about 185.6337456909.

It can be divided in two parts, 639 and 6918, that added together give a palindrome (7557).

The spelling of 6396918 in words is "six million, three hundred ninety-six thousand, nine hundred eighteen".