628346 has 4 divisors (see below), whose sum is σ = 942522. Its totient is φ = 314172.

The previous prime is 628319. The next prime is 628357. The reversal of 628346 is 643826.

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

It can be written as a sum of positive squares in only one way, i.e., 373321 + 255025 = 611^2 + 505^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157085 + ... + 157088.

2⁶²⁸³⁴⁶ is an apocalyptic number.

628346 is a deficient number, since it is larger than the sum of its proper divisors (314176).

628346 is a wasteful number, since it uses less digits than its factorization.

628346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314175.

The product of its digits is 6912, while the sum is 29.

The square root of 628346 is about 792.6827864915. The cubic root of 628346 is about 85.6511013186.

The spelling of 628346 in words is "six hundred twenty-eight thousand, three hundred forty-six".