638286006 has 16 divisors (see below), whose sum is σ = 1278571248. Its totient is φ = 212428800.

The previous prime is 638285983. The next prime is 638286007. The reversal of 638286006 is 600682836.

638286006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638286007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79135 + ... + 86826.

It is an arithmetic number, because the mean of its divisors is an integer number (79910703).

Almost surely, 2^638286006 is an apocalyptic number.

638286006 is an abundant number, since it is smaller than the sum of its proper divisors (640285242).

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

638286006 is a wasteful number, since it uses less digits than its factorization.

638286006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166607.

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

The square root of 638286006 is about 25264.3227892615. The cubic root of 638286006 is about 861.0038781945.

The spelling of 638286006 in words is "six hundred thirty-eight million, two hundred eighty-six thousand, six".