621846 has 24 divisors (see below), whose sum is σ = 1361880. Its totient is φ = 205056.

The previous prime is 621833. The next prime is 621869. The reversal of 621846 is 648126.

It is a congruent number.

It is an unprimeable number.

621846 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 11 ways as a sum of consecutive naturals, for example, 3126 + ... + 3318.

It is an arithmetic number, because the mean of its divisors is an integer number (56745).

2⁶²¹⁸⁴⁶ is an apocalyptic number.

621846 is an abundant number, since it is smaller than the sum of its proper divisors (740034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

621846 is a wasteful number, since it uses less digits than its factorization.

621846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 377 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 621846 is about 788.5721273289. The cubic root of 621846 is about 85.3547343513.

The spelling of 621846 in words is "six hundred twenty-one thousand, eight hundred forty-six".