6638234 has 4 divisors (see below), whose sum is σ = 9957354. Its totient is φ = 3319116.

The previous prime is 6638231. The next prime is 6638249. The reversal of 6638234 is 4328366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6235009 + 403225 = 2497^2 + 635^2 .

It is a d-powerful number, because it can be written as 6⁵ + 6⁷ + 3² + 8 + 2²¹ + 3¹⁰ + 4¹¹ .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6638234.

It is not an unprimeable number, because it can be changed into a prime (6638231) 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 as a sum of consecutive naturals, namely, 1659557 + ... + 1659560.

Almost surely, 2^6638234 is an apocalyptic number.

6638234 is a deficient number, since it is larger than the sum of its proper divisors (3319120).

6638234 is a wasteful number, since it uses less digits than its factorization.

6638234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319119.

The product of its digits is 20736, while the sum is 32.

The square root of 6638234 is about 2576.4770521004. The cubic root of 6638234 is about 187.9392628605.

The spelling of 6638234 in words is "six million, six hundred thirty-eight thousand, two hundred thirty-four".