628451684 has 24 divisors (see below), whose sum is σ = 1262872128. Its totient is φ = 268057440.

The previous prime is 628451669. The next prime is 628451741. The reversal of 628451684 is 486154826.

It is a happy number.

628451684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47279 + ... + 59094.

It is an arithmetic number, because the mean of its divisors is an integer number (52619672).

Almost surely, 2^628451684 is an apocalyptic number.

It is an amenable number.

628451684 is an abundant number, since it is smaller than the sum of its proper divisors (634420444).

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

628451684 is a wasteful number, since it uses less digits than its factorization.

628451684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106595 (or 106593 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 628451684 is about 25068.9386293078. The cubic root of 628451684 is about 856.5590304860.

The spelling of 628451684 in words is "six hundred twenty-eight million, four hundred fifty-one thousand, six hundred eighty-four".