6780628 has 6 divisors (see below), whose sum is σ = 11866106. Its totient is φ = 3390312.

The previous prime is 6780623. The next prime is 6780629. The reversal of 6780628 is 8260876.

It can be written as a sum of positive squares in only one way, i.e., 5673924 + 1106704 = 2382^2 + 1052^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 847575 + ... + 847582.

Almost surely, 2^6780628 is an apocalyptic number.

It is an amenable number.

6780628 is a deficient number, since it is larger than the sum of its proper divisors (5085478).

6780628 is a wasteful number, since it uses less digits than its factorization.

6780628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695161 (or 1695159 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 6780628 is about 2603.9639014395. The cubic root of 6780628 is about 189.2735696560.

The spelling of 6780628 in words is "six million, seven hundred eighty thousand, six hundred twenty-eight".