628504863 has 8 divisors (see below), whose sum is σ = 957721728. Its totient is φ = 359145624.

The previous prime is 628504861. The next prime is 628504873. The reversal of 628504863 is 368405826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 628504863 - 2¹ = 628504861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628504861) 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 7 ways as a sum of consecutive naturals, for example, 14964381 + ... + 14964422.

It is an arithmetic number, because the mean of its divisors is an integer number (119715216).

Almost surely, 2^628504863 is an apocalyptic number.

628504863 is a deficient number, since it is larger than the sum of its proper divisors (329216865).

628504863 is a wasteful number, since it uses less digits than its factorization.

628504863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29928813.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 628504863 is about 25069.9992620662. Note that the first 3 decimals coincide. The cubic root of 628504863 is about 856.5831902154.

The spelling of 628504863 in words is "six hundred twenty-eight million, five hundred four thousand, eight hundred sixty-three".