620043313 has 4 divisors (see below), whose sum is σ = 620959860. Its totient is φ = 619126768.

The previous prime is 620043289. The next prime is 620043341. The reversal of 620043313 is 313340026.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 613453824 + 6589489 = 24768^2 + 2567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620043313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620043013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457258 + ... + 458611.

It is an arithmetic number, because the mean of its divisors is an integer number (155239965).

Almost surely, 2^620043313 is an apocalyptic number.

It is an amenable number.

620043313 is a deficient number, since it is larger than the sum of its proper divisors (916547).

620043313 is an equidigital number, since it uses as much as digits as its factorization.

620043313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916546.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 620043313 is about 24900.6689267578. The cubic root of 620043313 is about 852.7217543590.

Adding to 620043313 its reverse (313340026), we get a palindrome (933383339).

The spelling of 620043313 in words is "six hundred twenty million, forty-three thousand, three hundred thirteen".