2628866 has 4 divisors (see below), whose sum is σ = 3943302. Its totient is φ = 1314432.

The previous prime is 2628839. The next prime is 2628889. The reversal of 2628866 is 6688262.

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., 2627641 + 1225 = 1621^2 + 35^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657215 + ... + 657218.

2^2628866 is an apocalyptic number.

2628866 is a deficient number, since it is larger than the sum of its proper divisors (1314436).

2628866 is a wasteful number, since it uses less digits than its factorization.

2628866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314435.

The product of its digits is 55296, while the sum is 38.

The square root of 2628866 is about 1621.3778091487. The cubic root of 2628866 is about 138.0138962412.

The spelling of 2628866 in words is "two million, six hundred twenty-eight thousand, eight hundred sixty-six".