628969826 has 8 divisors (see below), whose sum is σ = 949787100. Its totient is φ = 312374128.

The previous prime is 628969769. The next prime is 628969837.

628969826 is nontrivially palindromic in base 10.

628969826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 626250625 + 2719201 = 25025^2 + 1649^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055021 + ... + 1055616.

Almost surely, 2^628969826 is an apocalyptic number.

628969826 is a deficient number, since it is larger than the sum of its proper divisors (320817274).

628969826 is a wasteful number, since it uses less digits than its factorization.

628969826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110788.

The product of its digits is 4478976, while the sum is 56.

The square root of 628969826 is about 25079.2708426700. The cubic root of 628969826 is about 856.7943693375.

The spelling of 628969826 in words is "six hundred twenty-eight million, nine hundred sixty-nine thousand, eight hundred twenty-six".