168740 has 48 divisors (see below), whose sum is σ = 423360. Its totient is φ = 55680.

The previous prime is 168737. The next prime is 168743. The reversal of 168740 is 47861.

It is an interprime number because it is at equal distance from previous prime (168737) and next prime (168743).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (168743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2831 + ... + 2889.

It is an arithmetic number, because the mean of its divisors is an integer number (8820).

2¹⁶⁸⁷⁴⁰ is an apocalyptic number.

168740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211680).

168740 is an abundant number, since it is smaller than the sum of its proper divisors (254620).

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

168740 is a wasteful number, since it uses less digits than its factorization.

168740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 90 counting only the distinct ones).

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

The square root of 168740 is about 410.7797463362. The cubic root of 168740 is about 55.2593808932.

The spelling of 168740 in words is "one hundred sixty-eight thousand, seven hundred forty".