628856543 has 8 divisors (see below), whose sum is σ = 733360800. Its totient is φ = 539019600.

The previous prime is 628856531. The next prime is 628856567. The reversal of 628856543 is 345658826.

It is not a de Polignac number, because 628856543 - 2¹⁴ = 628840159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628856513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916358 + ... + 917043.

It is an arithmetic number, because the mean of its divisors is an integer number (91670100).

Almost surely, 2^628856543 is an apocalyptic number.

628856543 is a deficient number, since it is larger than the sum of its proper divisors (104504257).

628856543 is an equidigital number, since it uses as much as digits as its factorization.

628856543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833422 (or 1833408 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 47.

The square root of 628856543 is about 25077.0122422907. The cubic root of 628856543 is about 856.7429275140.

The spelling of 628856543 in words is "six hundred twenty-eight million, eight hundred fifty-six thousand, five hundred forty-three".