67406 has 4 divisors (see below), whose sum is σ = 101112. Its totient is φ = 33702.

The previous prime is 67399. The next prime is 67409. The reversal of 67406 is 60476.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67409) by changing a digit.

67406 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 as a sum of consecutive naturals, namely, 16850 + ... + 16853.

It is an arithmetic number, because the mean of its divisors is an integer number (25278).

2⁶⁷⁴⁰⁶ is an apocalyptic number.

67406 is a deficient number, since it is larger than the sum of its proper divisors (33706).

67406 is a wasteful number, since it uses less digits than its factorization.

67406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33705.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 67406 is about 259.6266550260. The cubic root of 67406 is about 40.6973550793.

The spelling of 67406 in words is "sixty-seven thousand, four hundred six".