108667777 has 2 divisors, whose sum is σ = 108667778. Its totient is φ = 108667776.

The previous prime is 108667771. The next prime is 108667789. The reversal of 108667777 is 777766801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106007616 + 2660161 = 10296^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 108667777 - 2¹¹ = 108665729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108667777.

It is not a weakly prime, because it can be changed into another prime (108667771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54333888 + 54333889.

It is an arithmetic number, because the mean of its divisors is an integer number (54333889).

Almost surely, 2^108667777 is an apocalyptic number.

It is an amenable number.

108667777 is a deficient number, since it is larger than the sum of its proper divisors (1).

108667777 is an equidigital number, since it uses as much as digits as its factorization.

108667777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691488, while the sum is 49.

The square root of 108667777 is about 10424.3837707559. The cubic root of 108667777 is about 477.1998087591.

The spelling of 108667777 in words is "one hundred eight million, six hundred sixty-seven thousand, seven hundred seventy-seven".