67716071 has 4 divisors (see below), whose sum is σ = 70660272. Its totient is φ = 64771872.

The previous prime is 67716017. The next prime is 67716107. The reversal of 67716071 is 17061776.

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

It is a cyclic number.

It is not a de Polignac number, because 67716071 - 2⁶ = 67716007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67716001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472066 + ... + 1472111.

It is an arithmetic number, because the mean of its divisors is an integer number (17665068).

Almost surely, 2^67716071 is an apocalyptic number.

67716071 is a deficient number, since it is larger than the sum of its proper divisors (2944201).

67716071 is a wasteful number, since it uses less digits than its factorization.

67716071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944200.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 67716071 is about 8228.9775185013. The cubic root of 67716071 is about 407.5966293236.

The spelling of 67716071 in words is "sixty-seven million, seven hundred sixteen thousand, seventy-one".