71115667 has 4 divisors (see below), whose sum is σ = 81275056. Its totient is φ = 60956280.

The previous prime is 71115661. The next prime is 71115673. The reversal of 71115667 is 76651117.

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

It is an interprime number because it is at equal distance from previous prime (71115661) and next prime (71115673).

It is not a de Polignac number, because 71115667 - 2¹¹ = 71113619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71115661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5079684 + ... + 5079697.

It is an arithmetic number, because the mean of its divisors is an integer number (20318764).

Almost surely, 2^71115667 is an apocalyptic number.

71115667 is a deficient number, since it is larger than the sum of its proper divisors (10159389).

71115667 is a wasteful number, since it uses less digits than its factorization.

71115667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10159388.

The product of its digits is 8820, while the sum is 34.

The square root of 71115667 is about 8433.0105537702. The cubic root of 71115667 is about 414.3065149004.

The spelling of 71115667 in words is "seventy-one million, one hundred fifteen thousand, six hundred sixty-seven".