68424 has 16 divisors (see below), whose sum is σ = 171120. Its totient is φ = 22800.

The previous prime is 68399. The next prime is 68437. The reversal of 68424 is 42486.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2851 = 68424 / (6 + 8 + 4 + 2 + 4).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 68394 and 68403.

It is an unprimeable number.

68424 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1402 + ... + 1449.

It is an arithmetic number, because the mean of its divisors is an integer number (10695).

2⁶⁸⁴²⁴ is an apocalyptic number.

It is an amenable number.

68424 is an abundant number, since it is smaller than the sum of its proper divisors (102696).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85560).

68424 is a wasteful number, since it uses less digits than its factorization.

68424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860 (or 2856 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 68424 is about 261.5798157351. The cubic root of 68424 is about 40.9012097051.

The spelling of 68424 in words is "sixty-eight thousand, four hundred twenty-four".