628475671 has 4 divisors (see below), whose sum is σ = 630043344. Its totient is φ = 626908000.

The previous prime is 628475663. The next prime is 628475689. The reversal of 628475671 is 176574826.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 628475671 - 2³ = 628475663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628425671) 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, 783235 + ... + 784036.

It is an arithmetic number, because the mean of its divisors is an integer number (157510836).

Almost surely, 2^628475671 is an apocalyptic number.

628475671 is a deficient number, since it is larger than the sum of its proper divisors (1567673).

628475671 is a wasteful number, since it uses less digits than its factorization.

628475671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567672.

The product of its digits is 564480, while the sum is 46.

The square root of 628475671 is about 25069.4170454759. The cubic root of 628475671 is about 856.5699281787.

The spelling of 628475671 in words is "six hundred twenty-eight million, four hundred seventy-five thousand, six hundred seventy-one".