108642977 has 2 divisors, whose sum is σ = 108642978. Its totient is φ = 108642976.

The previous prime is 108642967. The next prime is 108643009. The reversal of 108642977 is 779246801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106523041 + 2119936 = 10321^2 + 1456^2 .

It is an emirp because it is prime and its reverse (779246801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108642977 - 2²⁰ = 107594401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (108642917) 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, 54321488 + 54321489.

It is an arithmetic number, because the mean of its divisors is an integer number (54321489).

Almost surely, 2^108642977 is an apocalyptic number.

It is an amenable number.

108642977 is a deficient number, since it is larger than the sum of its proper divisors (1).

108642977 is an equidigital number, since it uses as much as digits as its factorization.

108642977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 108642977 is about 10423.1941841261. The cubic root of 108642977 is about 477.1635040513.

The spelling of 108642977 in words is "one hundred eight million, six hundred forty-two thousand, nine hundred seventy-seven".