4318621 has 2 divisors, whose sum is σ = 4318622. Its totient is φ = 4318620.

The previous prime is 4318597. The next prime is 4318637. The reversal of 4318621 is 1268134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4305625 + 12996 = 2075^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 4318621 - 2⁹ = 4318109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4318661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2159310 + 2159311.

It is an arithmetic number, because the mean of its divisors is an integer number (2159311).

Almost surely, 2^4318621 is an apocalyptic number.

It is an amenable number.

4318621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4318621 is an equidigital number, since it uses as much as digits as its factorization.

4318621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

The square root of 4318621 is about 2078.1292067627. The cubic root of 4318621 is about 162.8477256056.

The spelling of 4318621 in words is "four million, three hundred eighteen thousand, six hundred twenty-one".