628627 has 4 divisors (see below), whose sum is σ = 632016. Its totient is φ = 625240.

The previous prime is 628591. The next prime is 628651. The reversal of 628627 is 726826.

It is a happy number.

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 628627 - 2⁷ = 628499 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628687) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1399 + ... + 1792.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

2⁶²⁸⁶²⁷ is an apocalyptic number.

628627 is a deficient number, since it is larger than the sum of its proper divisors (3389).

628627 is a wasteful number, since it uses less digits than its factorization.

628627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388.

The product of its digits is 8064, while the sum is 31.

The square root of 628627 is about 792.8600128648. The cubic root of 628627 is about 85.6638673066.

The spelling of 628627 in words is "six hundred twenty-eight thousand, six hundred twenty-seven".