8140206687 has 8 divisors (see below), whose sum is σ = 10902280704. Its totient is φ = 5402468568.

The previous prime is 8140206677. The next prime is 8140206709. The reversal of 8140206687 is 7866020418.

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

It is not a de Polignac number, because 8140206687 - 2²⁴ = 8123429471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140206647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6083193 + ... + 6084530.

It is an arithmetic number, because the mean of its divisors is an integer number (1362785088).

Almost surely, 2^8140206687 is an apocalyptic number.

8140206687 is a deficient number, since it is larger than the sum of its proper divisors (2762074017).

8140206687 is a wasteful number, since it uses less digits than its factorization.

8140206687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12167949.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 8140206687 is about 90223.0939782049. The cubic root of 8140206687 is about 2011.6162908533.

The spelling of 8140206687 in words is "eight billion, one hundred forty million, two hundred six thousand, six hundred eighty-seven".