2768157686 has 24 divisors (see below), whose sum is σ = 5040163440. Its totient is φ = 1134771792.

The previous prime is 2768157683. The next prime is 2768157697. The reversal of 2768157686 is 6867518672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2768157683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 611801 + ... + 616308.

It is an arithmetic number, because the mean of its divisors is an integer number (210006810).

Almost surely, 2^2768157686 is an apocalyptic number.

2768157686 is a deficient number, since it is larger than the sum of its proper divisors (2272005754).

2768157686 is a wasteful number, since it uses less digits than its factorization.

2768157686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228148 (or 1228141 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 56.

The square root of 2768157686 is about 52613.2843110939. The cubic root of 2768157686 is about 1404.0964519388.

The spelling of 2768157686 in words is "two billion, seven hundred sixty-eight million, one hundred fifty-seven thousand, six hundred eighty-six".