67406071 has 6 divisors (see below), whose sum is σ = 71604680. Its totient is φ = 63440736.

The previous prime is 67406047. The next prime is 67406081. The reversal of 67406071 is 17060476.

It is not a de Polignac number, because 67406071 - 2¹³ = 67397879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67406021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116331 + ... + 116908.

Almost surely, 2^67406071 is an apocalyptic number.

67406071 is a deficient number, since it is larger than the sum of its proper divisors (4198609).

67406071 is a wasteful number, since it uses less digits than its factorization.

67406071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233273 (or 233256 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 67406071 is about 8210.1200356633. The cubic root of 67406071 is about 406.9736936838.

Subtracting from 67406071 its reverse (17060476), we obtain a triangular number (50345595 = T₁₀₀₃₄).

The spelling of 67406071 in words is "sixty-seven million, four hundred six thousand, seventy-one".