628205545 has 24 divisors (see below), whose sum is σ = 850307328. Its totient is φ = 441410400.

The previous prime is 628205537. The next prime is 628205563. The reversal of 628205545 is 545502826.

It is not a de Polignac number, because 628205545 - 2³ = 628205537 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1034632 + ... + 1035238.

It is an arithmetic number, because the mean of its divisors is an integer number (35429472).

Almost surely, 2^628205545 is an apocalyptic number.

It is an amenable number.

628205545 is a deficient number, since it is larger than the sum of its proper divisors (222101783).

628205545 is an equidigital number, since it uses as much as digits as its factorization.

628205545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The square root of 628205545 is about 25064.0289059840. The cubic root of 628205545 is about 856.4471894225.

The spelling of 628205545 in words is "six hundred twenty-eight million, two hundred five thousand, five hundred forty-five".