67426 has 4 divisors (see below), whose sum is σ = 101142. Its totient is φ = 33712.

The previous prime is 67421. The next prime is 67427. The reversal of 67426 is 62476.

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

It can be written as a sum of positive squares in only one way, i.e., 65025 + 2401 = 255^2 + 49^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 67426.

It is not an unprimeable number, because it can be changed into a prime (67421) 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 as a sum of consecutive naturals, namely, 16855 + ... + 16858.

2⁶⁷⁴²⁶ is an apocalyptic number.

67426 is a deficient number, since it is larger than the sum of its proper divisors (33716).

67426 is a wasteful number, since it uses less digits than its factorization.

67426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33715.

The product of its digits is 2016, while the sum is 25.

The square root of 67426 is about 259.6651690158. The cubic root of 67426 is about 40.7013797784.

Subtracting from 67426 its reverse (62476), we obtain a triangular number (4950 = T₉₉).

The spelling of 67426 in words is "sixty-seven thousand, four hundred twenty-six".