628556943 has 32 divisors (see below), whose sum is σ = 974848000. Its totient is φ = 352830816.

The previous prime is 628556941. The next prime is 628556969. The reversal of 628556943 is 349655826.

628556943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 628556943 - 2¹ = 628556941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628556892 and 628556901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628556941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369108 + ... + 370806.

It is an arithmetic number, because the mean of its divisors is an integer number (30464000).

Almost surely, 2^628556943 is an apocalyptic number.

628556943 is a deficient number, since it is larger than the sum of its proper divisors (346291057).

628556943 is a wasteful number, since it uses less digits than its factorization.

628556943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011.

The product of its digits is 1555200, while the sum is 48.

The square root of 628556943 is about 25071.0379322437. The cubic root of 628556943 is about 856.6068493378.

The spelling of 628556943 in words is "six hundred twenty-eight million, five hundred fifty-six thousand, nine hundred forty-three".