2768643 has 6 divisors (see below), whose sum is σ = 3999164. Its totient is φ = 1845756.

The previous prime is 2768639. The next prime is 2768651. The reversal of 2768643 is 3468672.

2768643 is a `hidden beast` number, since 2 + 7 + 6 + 8 + 643 = 666.

2768643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2768643 - 2² = 2768639 is a prime.

It is a super-2 number, since 2×2768643² = 15330768122898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2768598 and 2768607.

It is not an unprimeable number, because it can be changed into a prime (2768663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153805 + ... + 153822.

2^2768643 is an apocalyptic number.

2768643 is a deficient number, since it is larger than the sum of its proper divisors (1230521).

2768643 is a wasteful number, since it uses less digits than its factorization.

2768643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307633 (or 307630 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 2768643 is about 1663.9239766287. The cubic root of 2768643 is about 140.4178502641.

The spelling of 2768643 in words is "two million, seven hundred sixty-eight thousand, six hundred forty-three".