108746821 has 2 divisors, whose sum is σ = 108746822. Its totient is φ = 108746820.

The previous prime is 108746819. The next prime is 108746837. The reversal of 108746821 is 128647801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71402500 + 37344321 = 8450^2 + 6111^2 .

It is a cyclic number.

It is not a de Polignac number, because 108746821 - 2¹ = 108746819 is a prime.

Together with 108746819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108746881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54373410 + 54373411.

It is an arithmetic number, because the mean of its divisors is an integer number (54373411).

Almost surely, 2^108746821 is an apocalyptic number.

It is an amenable number.

108746821 is a deficient number, since it is larger than the sum of its proper divisors (1).

108746821 is an equidigital number, since it uses as much as digits as its factorization.

108746821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 108746821 is about 10428.1743848096. The cubic root of 108746821 is about 477.3154843860.

The spelling of 108746821 in words is "one hundred eight million, seven hundred forty-six thousand, eight hundred twenty-one".