2768866 has 4 divisors (see below), whose sum is σ = 4153302. Its totient is φ = 1384432.

The previous prime is 2768863. The next prime is 2768873. The reversal of 2768866 is 6688672.

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

It can be written as a sum of positive squares in only one way, i.e., 2493241 + 275625 = 1579^2 + 525^2 .

It is not an unprimeable number, because it can be changed into a prime (2768863) by changing a digit.

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, 692215 + ... + 692218.

2^2768866 is an apocalyptic number.

2768866 is a deficient number, since it is larger than the sum of its proper divisors (1384436).

2768866 is a wasteful number, since it uses less digits than its factorization.

2768866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384435.

The product of its digits is 193536, while the sum is 43.

The square root of 2768866 is about 1663.9909855525. The cubic root of 2768866 is about 140.4216201422.

The spelling of 2768866 in words is "two million, seven hundred sixty-eight thousand, eight hundred sixty-six".