628610306 has 4 divisors (see below), whose sum is σ = 942915462. Its totient is φ = 314305152.

The previous prime is 628610287. The next prime is 628610317. The reversal of 628610306 is 603016826.

628610306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 624550081 + 4060225 = 24991^2 + 2015^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157152575 + ... + 157152578.

Almost surely, 2^628610306 is an apocalyptic number.

628610306 is a deficient number, since it is larger than the sum of its proper divisors (314305156).

628610306 is a wasteful number, since it uses less digits than its factorization.

628610306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314305155.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 628610306 is about 25072.1021456120. The cubic root of 628610306 is about 856.6310899513.

The spelling of 628610306 in words is "six hundred twenty-eight million, six hundred ten thousand, three hundred six".