168998745 has 16 divisors (see below), whose sum is σ = 270747072. Its totient is φ = 90016320.

The previous prime is 168998743. The next prime is 168998789. The reversal of 168998745 is 547899861.

168998745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168998745 - 2¹ = 168998743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168998743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5454 + ... + 19176.

It is an arithmetic number, because the mean of its divisors is an integer number (16921692).

Almost surely, 2^168998745 is an apocalyptic number.

168998745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168998745 is a deficient number, since it is larger than the sum of its proper divisors (101748327).

168998745 is a wasteful number, since it uses less digits than its factorization.

168998745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14552.

The product of its digits is 4354560, while the sum is 57.

The square root of 168998745 is about 12999.9517306796. The cubic root of 168998745 is about 552.8761128019.

The spelling of 168998745 in words is "one hundred sixty-eight million, nine hundred ninety-eight thousand, seven hundred forty-five".