6630426 has 24 divisors (see below), whose sum is σ = 15672384. Its totient is φ = 2009160.

The previous prime is 6630409. The next prime is 6630433. The reversal of 6630426 is 6240366.

6630426 is a `hidden beast` number, since 6 + 630 + 4 + 26 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6630426.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16546 + ... + 16941.

It is an arithmetic number, because the mean of its divisors is an integer number (653016).

Almost surely, 2^6630426 is an apocalyptic number.

6630426 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6630426 is an abundant number, since it is smaller than the sum of its proper divisors (9041958).

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

6630426 is a wasteful number, since it uses less digits than its factorization.

6630426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33506 (or 33503 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 6630426 is about 2574.9613589334. The cubic root of 6630426 is about 187.8655482009.

It can be divided in two parts, 6630 and 426, that added together give a square (7056 = 84²).

The spelling of 6630426 in words is "six million, six hundred thirty thousand, four hundred twenty-six".