628645676 has 6 divisors (see below), whose sum is σ = 1100129940. Its totient is φ = 314322836.

The previous prime is 628645663. The next prime is 628645711. The reversal of 628645676 is 676546826.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78580706 + ... + 78580713.

It is an arithmetic number, because the mean of its divisors is an integer number (183354990).

Almost surely, 2^628645676 is an apocalyptic number.

It is an amenable number.

628645676 is a deficient number, since it is larger than the sum of its proper divisors (471484264).

628645676 is a wasteful number, since it uses less digits than its factorization.

628645676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157161423 (or 157161421 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The square root of 628645676 is about 25072.8075013549. The cubic root of 628645676 is about 856.6471563298.

The spelling of 628645676 in words is "six hundred twenty-eight million, six hundred forty-five thousand, six hundred seventy-six".