6448628 has 6 divisors (see below), whose sum is σ = 11285106. Its totient is φ = 3224312.

The previous prime is 6448621. The next prime is 6448633. The reversal of 6448628 is 8268446.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6091024 + 357604 = 2468^2 + 598^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6448591 and 6448600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806075 + ... + 806082.

It is an arithmetic number, because the mean of its divisors is an integer number (1880851).

Almost surely, 2^6448628 is an apocalyptic number.

It is an amenable number.

6448628 is a deficient number, since it is larger than the sum of its proper divisors (4836478).

6448628 is a wasteful number, since it uses less digits than its factorization.

6448628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612161 (or 1612159 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 6448628 is about 2539.4148932382. The cubic root of 6448628 is about 186.1325990156.

The spelling of 6448628 in words is "six million, four hundred forty-eight thousand, six hundred twenty-eight".