6918648 has 64 divisors (see below), whose sum is σ = 19180800. Its totient is φ = 2062080.

The previous prime is 6918647. The next prime is 6918649. The reversal of 6918648 is 8468196.

It is an interprime number because it is at equal distance from previous prime (6918647) and next prime (6918649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6918647) 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, 19093 + ... + 19451.

It is an arithmetic number, because the mean of its divisors is an integer number (299700).

Almost surely, 2^6918648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6918648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9590400).

6918648 is an abundant number, since it is smaller than the sum of its proper divisors (12262152).

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

6918648 is a wasteful number, since it uses less digits than its factorization.

6918648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 448 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 6918648 is about 2630.3322983988. The cubic root of 6918648 is about 190.5491775132.

It can be divided in two parts, 691 and 8648, that added together give a palindrome (9339).

The spelling of 6918648 in words is "six million, nine hundred eighteen thousand, six hundred forty-eight".