168450865 has 32 divisors (see below), whose sum is σ = 233303040. Its totient is φ = 115473600.

The previous prime is 168450857. The next prime is 168450871. The reversal of 168450865 is 568054861.

It is not a de Polignac number, because 168450865 - 2³ = 168450857 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345652 + ... + 346138.

It is an arithmetic number, because the mean of its divisors is an integer number (7290720).

Almost surely, 2^168450865 is an apocalyptic number.

It is an amenable number.

168450865 is a deficient number, since it is larger than the sum of its proper divisors (64852175).

168450865 is a wasteful number, since it uses less digits than its factorization.

168450865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 168450865 is about 12978.8622382703. The cubic root of 168450865 is about 552.2780064044.

The spelling of 168450865 in words is "one hundred sixty-eight million, four hundred fifty thousand, eight hundred sixty-five".