8138706 has 8 divisors (see below), whose sum is σ = 16277424. Its totient is φ = 2712900.

The previous prime is 8138693. The next prime is 8138717. The reversal of 8138706 is 6078318.

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

8138706 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678220 + ... + 678231.

It is an arithmetic number, because the mean of its divisors is an integer number (2034678).

Almost surely, 2^8138706 is an apocalyptic number.

8138706 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.

8138706 is a wasteful number, since it uses less digits than its factorization.

8138706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356456.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 8138706 is about 2852.8417411416. The cubic root of 8138706 is about 201.1492666148.

The spelling of 8138706 in words is "eight million, one hundred thirty-eight thousand, seven hundred six".