168786545 has 8 divisors (see below), whose sum is σ = 207484200. Its totient is φ = 131735680.

The previous prime is 168786533. The next prime is 168786547. The reversal of 168786545 is 545687861.

It can be written as a sum of positive squares in 4 ways, for example, as 5125696 + 163660849 = 2264^2 + 12793^2 .

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

It is not a de Polignac number, because 168786545 - 2¹⁶ = 168721009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168786493 and 168786502.

It is not an unprimeable number, because it can be changed into a prime (168786547) 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, 411470 + ... + 411879.

It is an arithmetic number, because the mean of its divisors is an integer number (25935525).

Almost surely, 2^168786545 is an apocalyptic number.

It is an amenable number.

168786545 is a deficient number, since it is larger than the sum of its proper divisors (38697655).

168786545 is an equidigital number, since it uses as much as digits as its factorization.

168786545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823395.

The product of its digits is 1612800, while the sum is 50.

The square root of 168786545 is about 12991.7875983253. The cubic root of 168786545 is about 552.6446131556.

The spelling of 168786545 in words is "one hundred sixty-eight million, seven hundred eighty-six thousand, five hundred forty-five".