628566776 has 16 divisors (see below), whose sum is σ = 1205971800. Its totient is φ = 306974304.

The previous prime is 628566769. The next prime is 628566779. The reversal of 628566776 is 677665826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628566779) 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 3 ways as a sum of consecutive naturals, for example, 913271 + ... + 913958.

Almost surely, 2^628566776 is an apocalyptic number.

It is an amenable number.

628566776 is a deficient number, since it is larger than the sum of its proper divisors (577405024).

628566776 is a wasteful number, since it uses less digits than its factorization.

628566776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827278 (or 1827274 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 53.

The square root of 628566776 is about 25071.2340342473. The cubic root of 628566776 is about 856.6113161679.

The spelling of 628566776 in words is "six hundred twenty-eight million, five hundred sixty-six thousand, seven hundred seventy-six".