628847 has 8 divisors (see below), whose sum is σ = 676512. Its totient is φ = 582400.

The previous prime is 628841. The next prime is 628861. The reversal of 628847 is 748826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 628847 - 2⁶ = 628783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628841) 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 7 ways as a sum of consecutive naturals, for example, 947 + ... + 1467.

It is an arithmetic number, because the mean of its divisors is an integer number (84564).

2⁶²⁸⁸⁴⁷ is an apocalyptic number.

628847 is a deficient number, since it is larger than the sum of its proper divisors (47665).

628847 is a wasteful number, since it uses less digits than its factorization.

628847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609.

The product of its digits is 21504, while the sum is 35.

The square root of 628847 is about 792.9987389649. The cubic root of 628847 is about 85.6738593754.

The spelling of 628847 in words is "six hundred twenty-eight thousand, eight hundred forty-seven".