6638200806 has 16 divisors (see below), whose sum is σ = 13463394048. Its totient is φ = 2181568200.

The previous prime is 6638200799. The next prime is 6638200831. The reversal of 6638200806 is 6080028366.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7790890 + ... + 7791741.

It is an arithmetic number, because the mean of its divisors is an integer number (841462128).

Almost surely, 2^6638200806 is an apocalyptic number.

6638200806 is an abundant number, since it is smaller than the sum of its proper divisors (6825193242).

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

6638200806 is a wasteful number, since it uses less digits than its factorization.

6638200806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15582707.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 6638200806 is about 81475.1545319185. The cubic root of 6638200806 is about 1879.3894960120.

The spelling of 6638200806 in words is "six billion, six hundred thirty-eight million, two hundred thousand, eight hundred six".