108563621 has 2 divisors, whose sum is σ = 108563622. Its totient is φ = 108563620.

The previous prime is 108563597. The next prime is 108563627. The reversal of 108563621 is 126365801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108451396 + 112225 = 10414^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 108563621 - 2¹⁴ = 108547237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108563627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54281810 + 54281811.

It is an arithmetic number, because the mean of its divisors is an integer number (54281811).

Almost surely, 2^108563621 is an apocalyptic number.

It is an amenable number.

108563621 is a deficient number, since it is larger than the sum of its proper divisors (1).

108563621 is an equidigital number, since it uses as much as digits as its factorization.

108563621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 108563621 is about 10419.3867861789. The cubic root of 108563621 is about 477.0472977051.

The spelling of 108563621 in words is "one hundred eight million, five hundred sixty-three thousand, six hundred twenty-one".