168405473 has 8 divisors (see below), whose sum is σ = 169340160. Its totient is φ = 167474160.

The previous prime is 168405467. The next prime is 168405499. The reversal of 168405473 is 374504861.

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 168405473 - 2⁸ = 168405217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168405403) 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, 255218 + ... + 255876.

It is an arithmetic number, because the mean of its divisors is an integer number (21167520).

Almost surely, 2^168405473 is an apocalyptic number.

It is an amenable number.

168405473 is a deficient number, since it is larger than the sum of its proper divisors (934687).

168405473 is an equidigital number, since it uses as much as digits as its factorization.

168405473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 168405473 is about 12977.1134309599. The cubic root of 168405473 is about 552.2283949932.

The spelling of 168405473 in words is "one hundred sixty-eight million, four hundred five thousand, four hundred seventy-three".