67424 has 36 divisors (see below), whose sum is σ = 158004. Its totient is φ = 28224.

The previous prime is 67421. The next prime is 67427. The reversal of 67424 is 42476.

It is an interprime number because it is at equal distance from previous prime (67421) and next prime (67427).

It is a self number, because there is not a number n which added to its sum of digits gives 67424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1547 + ... + 1589.

It is an arithmetic number, because the mean of its divisors is an integer number (4389).

2⁶⁷⁴²⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79002).

67424 is an abundant number, since it is smaller than the sum of its proper divisors (90580).

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

67424 is a wasteful number, since it uses less digits than its factorization.

67424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 52 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 67424 is about 259.6613178739. The cubic root of 67424 is about 40.7009773443.

It can be divided in two parts, 6 and 7424, that multiplied together give a palindrome (44544).

The spelling of 67424 in words is "sixty-seven thousand, four hundred twenty-four".