6313621 has 2 divisors, whose sum is σ = 6313622. Its totient is φ = 6313620.

The previous prime is 6313597. The next prime is 6313639. The reversal of 6313621 is 1263136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5808100 + 505521 = 2410^2 + 711^2 .

It is a cyclic number.

It is not a de Polignac number, because 6313621 - 2⁵ = 6313589 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6313592 and 6313601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6313691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3156810 + 3156811.

It is an arithmetic number, because the mean of its divisors is an integer number (3156811).

Almost surely, 2^6313621 is an apocalyptic number.

It is an amenable number.

6313621 is a deficient number, since it is larger than the sum of its proper divisors (1).

6313621 is an equidigital number, since it uses as much as digits as its factorization.

6313621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

The square root of 6313621 is about 2512.6919827150. The cubic root of 6313621 is about 184.8244841313.

Adding to 6313621 its reverse (1263136), we get a palindrome (7576757).

The spelling of 6313621 in words is "six million, three hundred thirteen thousand, six hundred twenty-one".