628555083 has 8 divisors (see below), whose sum is σ = 902540688. Its totient is φ = 386803104.

The previous prime is 628555061. The next prime is 628555091. The reversal of 628555083 is 380555826.

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

It is not a de Polignac number, because 628555083 - 2⁹ = 628554571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628555003) 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 7 ways as a sum of consecutive naturals, for example, 8058360 + ... + 8058437.

It is an arithmetic number, because the mean of its divisors is an integer number (112817586).

Almost surely, 2^628555083 is an apocalyptic number.

628555083 is a deficient number, since it is larger than the sum of its proper divisors (273985605).

628555083 is a wasteful number, since it uses less digits than its factorization.

628555083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16116813.

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 628555083 is about 25071.0008376211. Note that the first 3 decimals coincide. The cubic root of 628555083 is about 856.6060043916.

Subtracting from 628555083 its sum of digits (42), we obtain a square (628555041 = 25071²).

The spelling of 628555083 in words is "six hundred twenty-eight million, five hundred fifty-five thousand, eighty-three".