621313 has 8 divisors (see below), whose sum is σ = 774720. Its totient is φ = 484080.

The previous prime is 621301. The next prime is 621317. The reversal of 621313 is 313126.

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 621313 - 2¹⁷ = 490241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3958 + ... + 4111.

It is an arithmetic number, because the mean of its divisors is an integer number (96840).

2⁶²¹³¹³ is an apocalyptic number.

It is an amenable number.

621313 is a deficient number, since it is larger than the sum of its proper divisors (153407).

621313 is a wasteful number, since it uses less digits than its factorization.

621313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087.

The product of its digits is 108, while the sum is 16.

The square root of 621313 is about 788.2341022818. The cubic root of 621313 is about 85.3303408103.

Adding to 621313 its reverse (313126), we get a palindrome (934439).

It can be divided in two parts, 6213 and 13, that added together give a palindrome (6226).

The spelling of 621313 in words is "six hundred twenty-one thousand, three hundred thirteen".