628702774 has 64 divisors (see below), whose sum is σ = 1153958400. Its totient is φ = 251193600.

The previous prime is 628702771. The next prime is 628702793. The reversal of 628702774 is 477207826.

It is a self number, because there is not a number n which added to its sum of digits gives 628702774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628702771) 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 31 ways as a sum of consecutive naturals, for example, 2979529 + ... + 2979739.

It is an arithmetic number, because the mean of its divisors is an integer number (18030600).

Almost surely, 2^628702774 is an apocalyptic number.

628702774 is a deficient number, since it is larger than the sum of its proper divisors (525255626).

628702774 is a wasteful number, since it uses less digits than its factorization.

628702774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469.

The product of its (nonzero) digits is 263424, while the sum is 43.

The square root of 628702774 is about 25073.9461194284. The cubic root of 628702774 is about 856.6730911080.

The spelling of 628702774 in words is "six hundred twenty-eight million, seven hundred two thousand, seven hundred seventy-four".