2686719806 has 4 divisors (see below), whose sum is σ = 4030079712. Its totient is φ = 1343359902.

The previous prime is 2686719787. The next prime is 2686719821. The reversal of 2686719806 is 6089176862.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671679950 + ... + 671679953.

It is an arithmetic number, because the mean of its divisors is an integer number (1007519928).

Almost surely, 2^2686719806 is an apocalyptic number.

2686719806 is a deficient number, since it is larger than the sum of its proper divisors (1343359906).

2686719806 is a wasteful number, since it uses less digits than its factorization.

2686719806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343359905.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 2686719806 is about 51833.5779779864. The cubic root of 2686719806 is about 1390.1898893486.

The spelling of 2686719806 in words is "two billion, six hundred eighty-six million, seven hundred nineteen thousand, eight hundred six".