71085067 has 4 divisors (see below), whose sum is σ = 71166096. Its totient is φ = 71004040.

The previous prime is 71085013. The next prime is 71085089. The reversal of 71085067 is 76058017.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71085067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71085097) 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, 39184 + ... + 40957.

It is an arithmetic number, because the mean of its divisors is an integer number (17791524).

Almost surely, 2^71085067 is an apocalyptic number.

71085067 is a deficient number, since it is larger than the sum of its proper divisors (81029).

71085067 is an equidigital number, since it uses as much as digits as its factorization.

71085067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81028.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 71085067 is about 8431.1960598719. The cubic root of 71085067 is about 414.2470830917.

The spelling of 71085067 in words is "seventy-one million, eighty-five thousand, sixty-seven".