108764921 has 2 divisors, whose sum is σ = 108764922. Its totient is φ = 108764920.

The previous prime is 108764879. The next prime is 108764939. The reversal of 108764921 is 129467801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88153321 + 20611600 = 9389^2 + 4540^2 .

It is a cyclic number.

It is not a de Polignac number, because 108764921 - 2⁶ = 108764857 is a prime.

It is not a weakly prime, because it can be changed into another prime (108764951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54382460 + 54382461.

It is an arithmetic number, because the mean of its divisors is an integer number (54382461).

Almost surely, 2^108764921 is an apocalyptic number.

It is an amenable number.

108764921 is a deficient number, since it is larger than the sum of its proper divisors (1).

108764921 is an equidigital number, since it uses as much as digits as its factorization.

108764921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 108764921 is about 10429.0421899616. The cubic root of 108764921 is about 477.3419646421.

The spelling of 108764921 in words is "one hundred eight million, seven hundred sixty-four thousand, nine hundred twenty-one".