628344992659 has 4 divisors (see below), whose sum is σ = 641714035104. Its totient is φ = 614975950216.

The previous prime is 628344992549. The next prime is 628344992683. The reversal of 628344992659 is 956299443826.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956299443826 = 2 ⋅478149721913.

It is a cyclic number.

It is not a de Polignac number, because 628344992659 - 2²¹ = 628342895507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628344992594 and 628344992603.

It is not an unprimeable number, because it can be changed into a prime (628344992699) 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 3 ways as a sum of consecutive naturals, for example, 6684521152 + ... + 6684521245.

It is an arithmetic number, because the mean of its divisors is an integer number (160428508776).

Almost surely, 2^628344992659 is an apocalyptic number.

628344992659 is a deficient number, since it is larger than the sum of its proper divisors (13369042445).

628344992659 is a wasteful number, since it uses less digits than its factorization.

628344992659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13369042444.

The product of its digits is 201553920, while the sum is 67.

The spelling of 628344992659 in words is "six hundred twenty-eight billion, three hundred forty-four million, nine hundred ninety-two thousand, six hundred fifty-nine".