628669794768 has 40 divisors (see below), whose sum is σ = 1624116892128. Its totient is φ = 209549726592.

The previous prime is 628669794631. The next prime is 628669794793. The reversal of 628669794768 is 867497966826.

628669794768 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 792887²-1.

It is a junction number, because it is equal to n+sod(n) for n = 628669794693 and 628669794702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387555 + ... + 1783997.

Almost surely, 2^628669794768 is an apocalyptic number.

It is an amenable number.

628669794768 is an abundant number, since it is smaller than the sum of its proper divisors (995447097360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628669794768 is a wasteful number, since it uses less digits than its factorization.

628669794768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429491 (or 429485 counting only the distinct ones).

The product of its digits is 2633637888, while the sum is 78.

The spelling of 628669794768 in words is "six hundred twenty-eight billion, six hundred sixty-nine million, seven hundred ninety-four thousand, seven hundred sixty-eight".