168013777 has 8 divisors (see below), whose sum is σ = 172395720. Its totient is φ = 163645440.

The previous prime is 168013759. The next prime is 168013801. The reversal of 168013777 is 777310861.

168013777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2531281 + 165482496 = 1591^2 + 12864^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168013777 - 2¹⁹ = 167489489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168013177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24549 + ... + 30637.

It is an arithmetic number, because the mean of its divisors is an integer number (21549465).

Almost surely, 2^168013777 is an apocalyptic number.

It is an amenable number.

168013777 is a deficient number, since it is larger than the sum of its proper divisors (4381943).

168013777 is an equidigital number, since it uses as much as digits as its factorization.

168013777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6803.

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 168013777 is about 12962.0128452336. The cubic root of 168013777 is about 551.7999180776.

The spelling of 168013777 in words is "one hundred sixty-eight million, thirteen thousand, seven hundred seventy-seven".