168407 has 4 divisors (see below), whose sum is σ = 170520. Its totient is φ = 166296.

The previous prime is 168391. The next prime is 168409. The reversal of 168407 is 704861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 168407 - 2⁴ = 168391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932 + ... + 1097.

It is an arithmetic number, because the mean of its divisors is an integer number (42630).

2¹⁶⁸⁴⁰⁷ is an apocalyptic number.

168407 is a deficient number, since it is larger than the sum of its proper divisors (2113).

168407 is an equidigital number, since it uses as much as digits as its factorization.

168407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 168407 is about 410.3742194632. The cubic root of 168407 is about 55.2230064080.

It can be divided in two parts, 168 and 407, that added together give a palindrome (575).

The spelling of 168407 in words is "one hundred sixty-eight thousand, four hundred seven".