6628766 has 4 divisors (see below), whose sum is σ = 9943152. Its totient is φ = 3314382.

The previous prime is 6628753. The next prime is 6628781. The reversal of 6628766 is 6678266.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1657190 + ... + 1657193.

It is an arithmetic number, because the mean of its divisors is an integer number (2485788).

Almost surely, 2^6628766 is an apocalyptic number.

6628766 is a deficient number, since it is larger than the sum of its proper divisors (3314386).

6628766 is a wasteful number, since it uses less digits than its factorization.

6628766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314385.

The product of its digits is 145152, while the sum is 41.

The square root of 6628766 is about 2574.6390038217. The cubic root of 6628766 is about 187.8498688243.

The spelling of 6628766 in words is "six million, six hundred twenty-eight thousand, seven hundred sixty-six".