628464329 has 2 divisors, whose sum is σ = 628464330. Its totient is φ = 628464328.

The previous prime is 628464251. The next prime is 628464337. The reversal of 628464329 is 923464826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603193600 + 25270729 = 24560^2 + 5027^2 .

It is a cyclic number.

It is not a de Polignac number, because 628464329 - 2²⁴ = 611687113 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628464329.

It is not a weakly prime, because it can be changed into another prime (628464929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314232164 + 314232165.

It is an arithmetic number, because the mean of its divisors is an integer number (314232165).

Almost surely, 2^628464329 is an apocalyptic number.

It is an amenable number.

628464329 is a deficient number, since it is larger than the sum of its proper divisors (1).

628464329 is an equidigital number, since it uses as much as digits as its factorization.

628464329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 44.

The square root of 628464329 is about 25069.1908325738. The cubic root of 628464329 is about 856.5647753542.

The spelling of 628464329 in words is "six hundred twenty-eight million, four hundred sixty-four thousand, three hundred twenty-nine".