8411621 has 2 divisors, whose sum is σ = 8411622. Its totient is φ = 8411620.

The previous prime is 8411603. The next prime is 8411677. The reversal of 8411621 is 1261148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4351396 + 4060225 = 2086^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 8411621 - 2¹⁴ = 8395237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8411681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4205810 + 4205811.

It is an arithmetic number, because the mean of its divisors is an integer number (4205811).

Almost surely, 2^8411621 is an apocalyptic number.

It is an amenable number.

8411621 is a deficient number, since it is larger than the sum of its proper divisors (1).

8411621 is an equidigital number, since it uses as much as digits as its factorization.

8411621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 23.

The square root of 8411621 is about 2900.2794692926. The cubic root of 8411621 is about 203.3729705641.

Adding to 8411621 its reverse (1261148), we get a palindrome (9672769).

The spelling of 8411621 in words is "eight million, four hundred eleven thousand, six hundred twenty-one".