638100706 has 8 divisors (see below), whose sum is σ = 966096720. Its totient is φ = 316068468.

The previous prime is 638100703. The next prime is 638100713. The reversal of 638100706 is 607001836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (638100703) 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 3 ways as a sum of consecutive naturals, for example, 1490676 + ... + 1491103.

It is an arithmetic number, because the mean of its divisors is an integer number (120762090).

Almost surely, 2^638100706 is an apocalyptic number.

638100706 is a deficient number, since it is larger than the sum of its proper divisors (327996014).

638100706 is a wasteful number, since it uses less digits than its factorization.

638100706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981888.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 638100706 is about 25260.6552963299. The cubic root of 638100706 is about 860.9205511496.

The spelling of 638100706 in words is "six hundred thirty-eight million, one hundred thousand, seven hundred six".