6430628 has 12 divisors (see below), whose sum is σ = 11271372. Its totient is φ = 3210240.

The previous prime is 6430621. The next prime is 6430661. The reversal of 6430628 is 8260346.

It can be written as a sum of positive squares in 2 ways, for example, as 4293184 + 2137444 = 2072^2 + 1462^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6430628.

It is not an unprimeable number, because it can be changed into a prime (6430621) 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 3 ways as a sum of consecutive naturals, for example, 4208 + ... + 5528.

It is an arithmetic number, because the mean of its divisors is an integer number (939281).

Almost surely, 2^6430628 is an apocalyptic number.

It is an amenable number.

6430628 is a deficient number, since it is larger than the sum of its proper divisors (4840744).

6430628 is a wasteful number, since it uses less digits than its factorization.

6430628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542 (or 2540 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 6430628 is about 2535.8682931099. The cubic root of 6430628 is about 185.9592541880.

The spelling of 6430628 in words is "six million, four hundred thirty thousand, six hundred twenty-eight".