628646383 has 6 divisors (see below), whose sum is σ = 667801136. Its totient is φ = 591666912.

The previous prime is 628646341. The next prime is 628646387. The reversal of 628646383 is 383646826.

It is a de Polignac number, because none of the positive numbers 2^k-628646383 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 (628646387) 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 5 ways as a sum of consecutive naturals, for example, 1087335 + ... + 1087912.

Almost surely, 2^628646383 is an apocalyptic number.

628646383 is a deficient number, since it is larger than the sum of its proper divisors (39154753).

628646383 is a wasteful number, since it uses less digits than its factorization.

628646383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175281 (or 2175264 counting only the distinct ones).

The product of its digits is 995328, while the sum is 46.

The square root of 628646383 is about 25072.8216002906. The cubic root of 628646383 is about 856.6474774696.

The spelling of 628646383 in words is "six hundred twenty-eight million, six hundred forty-six thousand, three hundred eighty-three".