628550263 has 16 divisors (see below), whose sum is σ = 710532000. Its totient is φ = 550775680.

The previous prime is 628550243. The next prime is 628550303. The reversal of 628550263 is 362055826.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 628550263 - 2⁹ = 628549751 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 (628550243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245313 + ... + 247861.

It is an arithmetic number, because the mean of its divisors is an integer number (44408250).

Almost surely, 2^628550263 is an apocalyptic number.

628550263 is a deficient number, since it is larger than the sum of its proper divisors (81981737).

628550263 is a wasteful number, since it uses less digits than its factorization.

628550263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 628550263 is about 25070.9047104407. The cubic root of 628550263 is about 856.6038147922.

The spelling of 628550263 in words is "six hundred twenty-eight million, five hundred fifty thousand, two hundred sixty-three".