628622 has 8 divisors (see below), whose sum is σ = 947376. Its totient is φ = 312832.

The previous prime is 628591. The next prime is 628651. The reversal of 628622 is 226826.

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

It is a junction number, because it is equal to n+sod(n) for n = 628591 and 628600.

It is a congruent 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 in 3 ways as a sum of consecutive naturals, for example, 98 + ... + 1125.

It is an arithmetic number, because the mean of its divisors is an integer number (118422).

2⁶²⁸⁶²² is an apocalyptic number.

628622 is a deficient number, since it is larger than the sum of its proper divisors (318754).

628622 is a wasteful number, since it uses less digits than its factorization.

628622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482.

The product of its digits is 2304, while the sum is 26.

The square root of 628622 is about 792.8568597168. The cubic root of 628622 is about 85.6636401871.

The spelling of 628622 in words is "six hundred twenty-eight thousand, six hundred twenty-two".