2687205812 has 12 divisors (see below), whose sum is σ = 4703172096. Its totient is φ = 1343442360.

The previous prime is 2687205803. The next prime is 2687205863. The reversal of 2687205812 is 2185027862.

It is a self number, because there is not a number n which added to its sum of digits gives 2687205812.

It is a congruent 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, 2573 + ... + 73355.

It is an arithmetic number, because the mean of its divisors is an integer number (391931008).

Almost surely, 2^2687205812 is an apocalyptic number.

It is an amenable number.

2687205812 is a deficient number, since it is larger than the sum of its proper divisors (2015966284).

2687205812 is a wasteful number, since it uses less digits than its factorization.

2687205812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80278 (or 80276 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 2687205812 is about 51838.2659046384. The cubic root of 2687205812 is about 1390.2737090173.

The spelling of 2687205812 in words is "two billion, six hundred eighty-seven million, two hundred five thousand, eight hundred twelve".