628626776 has 16 divisors (see below), whose sum is σ = 1183028640. Its totient is φ = 313152480.

The previous prime is 628626767. The next prime is 628626821. The reversal of 628626776 is 677626826.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142811 + ... + 147146.

It is an arithmetic number, because the mean of its divisors is an integer number (73939290).

Almost surely, 2^628626776 is an apocalyptic number.

It is an amenable number.

628626776 is a deficient number, since it is larger than the sum of its proper divisors (554401864).

628626776 is a wasteful number, since it uses less digits than its factorization.

628626776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290234 (or 290230 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

The square root of 628626776 is about 25072.4305961748. The cubic root of 628626776 is about 856.6385713170.

Adding to 628626776 its sum of digits (50), we get a palindrome (628626826).

Subtracting 628626776 from its reverse (677626826), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 628626776 in words is "six hundred twenty-eight million, six hundred twenty-six thousand, seven hundred seventy-six".