108661799 has 2 divisors, whose sum is σ = 108661800. Its totient is φ = 108661798.

The previous prime is 108661793. The next prime is 108661843. The reversal of 108661799 is 997166801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 108661799 - 2⁸ = 108661543 is a prime.

It is a Sophie Germain 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 (108661793) 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, 54330899 + 54330900.

It is an arithmetic number, because the mean of its divisors is an integer number (54330900).

Almost surely, 2^108661799 is an apocalyptic number.

108661799 is a deficient number, since it is larger than the sum of its proper divisors (1).

108661799 is an equidigital number, since it uses as much as digits as its factorization.

108661799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 108661799 is about 10424.0970352352. The cubic root of 108661799 is about 477.1910580731.

The spelling of 108661799 in words is "one hundred eight million, six hundred sixty-one thousand, seven hundred ninety-nine".