168744546 has 64 divisors (see below), whose sum is σ = 383523840. Its totient is φ = 55672272.

The previous prime is 168744497. The next prime is 168744547. The reversal of 168744546 is 645447861.

168744546 is a `hidden beast` number, since 1 + 68 + 7 + 44 + 546 = 666.

It is a super-2 number, since 2×168744546² = 56949443609492232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168744547) 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 in 31 ways as a sum of consecutive naturals, for example, 756591 + ... + 756813.

It is an arithmetic number, because the mean of its divisors is an integer number (5992560).

Almost surely, 2^168744546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168744546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191761920).

168744546 is an abundant number, since it is smaller than the sum of its proper divisors (214779294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168744546 is an equidigital number, since it uses as much as digits as its factorization.

168744546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 401 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 168744546 is about 12990.1711305125. The cubic root of 168744546 is about 552.5987713370.

The spelling of 168744546 in words is "one hundred sixty-eight million, seven hundred forty-four thousand, five hundred forty-six".