628658993663 has 8 divisors (see below), whose sum is σ = 629731436448. Its totient is φ = 627586704864.

The previous prime is 628658993659. The next prime is 628658993689. The reversal of 628658993663 is 366399856826.

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 628658993663 - 2² = 628658993659 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 (628658993603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10626281 + ... + 10685277.

It is an arithmetic number, because the mean of its divisors is an integer number (78716429556).

Almost surely, 2^628658993663 is an apocalyptic number.

628658993663 is a deficient number, since it is larger than the sum of its proper divisors (1072442785).

628658993663 is a wasteful number, since it uses less digits than its factorization.

628658993663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76993.

The product of its digits is 604661760, while the sum is 71.

The spelling of 628658993663 in words is "six hundred twenty-eight billion, six hundred fifty-eight million, nine hundred ninety-three thousand, six hundred sixty-three".