2687749056 has 84 divisors (see below), whose sum is σ = 7883181592. Its totient is φ = 875073024.

The previous prime is 2687749039. The next prime is 2687749067. The reversal of 2687749056 is 6509477862.

2687749056 is a `hidden beast` number, since 26 + 87 + 7 + 490 + 56 = 666.

It is a super-2 number, since 2×2687749056² = 14447989976057782272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2687748993 and 2687749011.

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 in 11 ways as a sum of consecutive naturals, for example, 29491 + ... + 79026.

Almost surely, 2^2687749056 is an apocalyptic number.

It is an amenable number.

2687749056 is an abundant number, since it is smaller than the sum of its proper divisors (5195432536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2687749056 is a wasteful number, since it uses less digits than its factorization.

2687749056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108578 (or 108565 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The square root of 2687749056 is about 51843.5054370362. The cubic root of 2687749056 is about 1390.3673883526.

The spelling of 2687749056 in words is "two billion, six hundred eighty-seven million, seven hundred forty-nine thousand, fifty-six".