628463646 has 48 divisors (see below), whose sum is σ = 1435496400. Its totient is φ = 198163584.

The previous prime is 628463629. The next prime is 628463659. The reversal of 628463646 is 646364826.

628463646 is a `hidden beast` number, since 6 + 2 + 8 + 4 + 636 + 4 + 6 = 666.

628463646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×628463646² = 789933108687226632, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 378450 + ... + 380106.

It is an arithmetic number, because the mean of its divisors is an integer number (29906175).

Almost surely, 2^628463646 is an apocalyptic number.

628463646 is an abundant number, since it is smaller than the sum of its proper divisors (807032754).

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

628463646 is a wasteful number, since it uses less digits than its factorization.

628463646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793 (or 2790 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The square root of 628463646 is about 25069.1772102716. The cubic root of 628463646 is about 856.5644650561.

The spelling of 628463646 in words is "six hundred twenty-eight million, four hundred sixty-three thousand, six hundred forty-six".