6638830 has 16 divisors (see below), whose sum is σ = 13036464. Its totient is φ = 2414080.

The previous prime is 6638803. The next prime is 6638851. The reversal of 6638830 is 388366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30067 + ... + 30286.

It is an arithmetic number, because the mean of its divisors is an integer number (814779).

Almost surely, 2^6638830 is an apocalyptic number.

6638830 is a deficient number, since it is larger than the sum of its proper divisors (6397634).

6638830 is a wasteful number, since it uses less digits than its factorization.

6638830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60371.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 6638830 is about 2576.5927113147. The cubic root of 6638830 is about 187.9448872705.

Adding to 6638830 its product of nonzero digits (20736), we get a palindrome (6659566).

It can be divided in two parts, 6638 and 830, that multiplied together give a triangular number (5509540 = T₃₃₁₉).

The spelling of 6638830 in words is "six million, six hundred thirty-eight thousand, eight hundred thirty".