628463648 has 24 divisors (see below), whose sum is σ = 1270730412. Its totient is φ = 305738496.

The previous prime is 628463629. The next prime is 628463659. The reversal of 628463648 is 846364826.

It can be written as a sum of positive squares in 2 ways, for example, as 464316304 + 164147344 = 21548^2 + 12812^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264215 + ... + 266582.

Almost surely, 2^628463648 is an apocalyptic number.

It is an amenable number.

628463648 is an abundant number, since it is smaller than the sum of its proper divisors (642266764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628463648 is a wasteful number, since it uses less digits than its factorization.

628463648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530844 (or 530836 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 47.

The square root of 628463648 is about 25069.1772501612. The cubic root of 628463648 is about 856.5644659647.

The spelling of 628463648 in words is "six hundred twenty-eight million, four hundred sixty-three thousand, six hundred forty-eight".