628344965786 has 4 divisors (see below), whose sum is σ = 942517448682. Its totient is φ = 314172482892.

The previous prime is 628344965779. The next prime is 628344965813. The reversal of 628344965786 is 687569443826.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 687569443826 = 2 ⋅343784721913.

It can be written as a sum of positive squares in only one way, i.e., 551432482225 + 76912483561 = 742585^2 + 277331^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 157086241445 + ... + 157086241448.

Almost surely, 2^628344965786 is an apocalyptic number.

628344965786 is a deficient number, since it is larger than the sum of its proper divisors (314172482896).

628344965786 is a wasteful number, since it uses less digits than its factorization.

628344965786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314172482895.

The product of its digits is 418037760, while the sum is 68.

The spelling of 628344965786 in words is "six hundred twenty-eight billion, three hundred forty-four million, nine hundred sixty-five thousand, seven hundred eighty-six".