638280714 has 8 divisors (see below), whose sum is σ = 1276561440. Its totient is φ = 212760236.

The previous prime is 638280689. The next prime is 638280761. The reversal of 638280714 is 417082836.

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

638280714 is an admirable number.

It is an unprimeable number.

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, 53190054 + ... + 53190065.

It is an arithmetic number, because the mean of its divisors is an integer number (159570180).

Almost surely, 2^638280714 is an apocalyptic number.

638280714 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

638280714 is a wasteful number, since it uses less digits than its factorization.

638280714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106380124.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 638280714 is about 25264.2180563737. The cubic root of 638280714 is about 861.0014986734.

The spelling of 638280714 in words is "six hundred thirty-eight million, two hundred eighty thousand, seven hundred fourteen".