628985677321 has 8 divisors (see below), whose sum is σ = 644495491584. Its totient is φ = 613483896480.

The previous prime is 628985677297. The next prime is 628985677357. The reversal of 628985677321 is 123776589826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 628985677321 - 2¹³ = 628985669129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628985677361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1849681 + ... + 2163166.

It is an arithmetic number, because the mean of its divisors is an integer number (80561936448).

Almost surely, 2^628985677321 is an apocalyptic number.

It is an amenable number.

628985677321 is a deficient number, since it is larger than the sum of its proper divisors (15509814263).

628985677321 is a wasteful number, since it uses less digits than its factorization.

628985677321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016711.

The product of its digits is 60963840, while the sum is 64.

The spelling of 628985677321 in words is "six hundred twenty-eight billion, nine hundred eighty-five million, six hundred seventy-seven thousand, three hundred twenty-one".