628776532 has 12 divisors (see below), whose sum is σ = 1118398036. Its totient is φ = 309234240.

The previous prime is 628776529. The next prime is 628776541. The reversal of 628776532 is 235677826.

It can be written as a sum of positive squares in 2 ways, for example, as 109118916 + 519657616 = 10446^2 + 22796^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 1288233 + ... + 1288720.

Almost surely, 2^628776532 is an apocalyptic number.

It is an amenable number.

628776532 is a deficient number, since it is larger than the sum of its proper divisors (489621504).

628776532 is a wasteful number, since it uses less digits than its factorization.

628776532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577018 (or 2577016 counting only the distinct ones).

The product of its digits is 846720, while the sum is 46.

The square root of 628776532 is about 25075.4168858665. The cubic root of 628776532 is about 856.7065907869.

The spelling of 628776532 in words is "six hundred twenty-eight million, seven hundred seventy-six thousand, five hundred thirty-two".