6636430 has 16 divisors (see below), whose sum is σ = 12110544. Its totient is φ = 2617920.

The previous prime is 6636359. The next prime is 6636433. The reversal of 6636430 is 346366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636433) 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 7 ways as a sum of consecutive naturals, for example, 3816 + ... + 5275.

It is an arithmetic number, because the mean of its divisors is an integer number (756909).

Almost surely, 2^6636430 is an apocalyptic number.

6636430 is a deficient number, since it is larger than the sum of its proper divisors (5474114).

6636430 is a wasteful number, since it uses less digits than its factorization.

6636430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9171.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 6636430 is about 2576.1269378662. The cubic root of 6636430 is about 187.9222365878.

Subtracting from 6636430 its reverse (346366), we obtain a square (6290064 = 2508²).

The spelling of 6636430 in words is "six million, six hundred thirty-six thousand, four hundred thirty".