621246 has 16 divisors (see below), whose sum is σ = 1269504. Its totient is φ = 202584.

The previous prime is 621241. The next prime is 621259. The reversal of 621246 is 642126.

It is a happy number.

It is a super-3 number, since 3×621246³ = 719303330442584808, which contains 333 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621241) by changing a digit.

621246 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (79344).

2⁶²¹²⁴⁶ is an apocalyptic number.

621246 is an abundant number, since it is smaller than the sum of its proper divisors (648258).

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

621246 is a wasteful number, since it uses less digits than its factorization.

621246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255.

The product of its digits is 576, while the sum is 21.

The square root of 621246 is about 788.1916010717. The cubic root of 621246 is about 85.3272734683.

The spelling of 621246 in words is "six hundred twenty-one thousand, two hundred forty-six".