628634851 has 8 divisors (see below), whose sum is σ = 678328560. Its totient is φ = 579132192.

The previous prime is 628634821. The next prime is 628634861. The reversal of 628634851 is 158436826.

628634851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 628634851 - 2⁹ = 628634339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628634798 and 628634807.

It is not an unprimeable number, because it can be changed into a prime (628634801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40885 + ... + 54118.

It is an arithmetic number, because the mean of its divisors is an integer number (84791070).

Almost surely, 2^628634851 is an apocalyptic number.

628634851 is a deficient number, since it is larger than the sum of its proper divisors (49693709).

628634851 is a wasteful number, since it uses less digits than its factorization.

628634851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95525.

The product of its digits is 276480, while the sum is 43.

The square root of 628634851 is about 25072.5916291077. The cubic root of 628634851 is about 856.6422392735.

The spelling of 628634851 in words is "six hundred twenty-eight million, six hundred thirty-four thousand, eight hundred fifty-one".