628343303 has 4 divisors (see below), whose sum is σ = 718106640. Its totient is φ = 538579968.

The previous prime is 628343299. The next prime is 628343389. The reversal of 628343303 is 303343826.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 628343303 - 2² = 628343299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 628343303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628313303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44881658 + ... + 44881671.

It is an arithmetic number, because the mean of its divisors is an integer number (179526660).

Almost surely, 2^628343303 is an apocalyptic number.

628343303 is a deficient number, since it is larger than the sum of its proper divisors (89763337).

628343303 is an equidigital number, since it uses as much as digits as its factorization.

628343303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89763336.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 628343303 is about 25066.7768769740. The cubic root of 628343303 is about 856.5097877392.

The spelling of 628343303 in words is "six hundred twenty-eight million, three hundred forty-three thousand, three hundred three".