628405563 has 32 divisors (see below), whose sum is σ = 926784000. Its totient is φ = 376966656.

The previous prime is 628405513. The next prime is 628405571. The reversal of 628405563 is 365504826.

It is a de Polignac number, because none of the positive numbers 2^k-628405563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628405513) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 193731 + ... + 196947.

It is an arithmetic number, because the mean of its divisors is an integer number (28962000).

Almost surely, 2^628405563 is an apocalyptic number.

628405563 is a deficient number, since it is larger than the sum of its proper divisors (298378437).

628405563 is a wasteful number, since it uses less digits than its factorization.

628405563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 628405563 is about 25068.0187290500. The cubic root of 628405563 is about 856.5380761700.

The spelling of 628405563 in words is "six hundred twenty-eight million, four hundred five thousand, five hundred sixty-three".