628668364 has 48 divisors (see below), whose sum is σ = 1201858560. Its totient is φ = 286603520.

The previous prime is 628668353. The next prime is 628668367. The reversal of 628668364 is 463866826.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (628668367) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 283749 + ... + 285955.

It is an arithmetic number, because the mean of its divisors is an integer number (25038720).

Almost surely, 2^628668364 is an apocalyptic number.

It is an amenable number.

628668364 is a deficient number, since it is larger than the sum of its proper divisors (573190196).

628668364 is a wasteful number, since it uses less digits than its factorization.

628668364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358 (or 2356 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

The square root of 628668364 is about 25073.2599396249. The cubic root of 628668364 is about 856.6574617518.

The spelling of 628668364 in words is "six hundred twenty-eight million, six hundred sixty-eight thousand, three hundred sixty-four".