6648426 has 64 divisors (see below), whose sum is σ = 15863040. Its totient is φ = 2059200.

The previous prime is 6648413. The next prime is 6648431. The reversal of 6648426 is 6248466.

It is a happy number.

6648426 is a `hidden beast` number, since 6 + 648 + 4 + 2 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65776 + ... + 65876.

It is an arithmetic number, because the mean of its divisors is an integer number (247860).

Almost surely, 2^6648426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6648426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7931520).

6648426 is an abundant number, since it is smaller than the sum of its proper divisors (9214614).

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

6648426 is a wasteful number, since it uses less digits than its factorization.

6648426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 182 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 6648426 is about 2578.4541880747. The cubic root of 6648426 is about 188.0353977409.

The spelling of 6648426 in words is "six million, six hundred forty-eight thousand, four hundred twenty-six".