71125667 has 4 divisors (see below), whose sum is σ = 71173656. Its totient is φ = 71077680.

The previous prime is 71125657. The next prime is 71125673. The reversal of 71125667 is 76652117.

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 71125667 - 2⁴ = 71125651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71125657) 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, 21698 + ... + 24759.

It is an arithmetic number, because the mean of its divisors is an integer number (17793414).

Almost surely, 2^71125667 is an apocalyptic number.

71125667 is a deficient number, since it is larger than the sum of its proper divisors (47989).

71125667 is a wasteful number, since it uses less digits than its factorization.

71125667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47988.

The product of its digits is 17640, while the sum is 35.

The square root of 71125667 is about 8433.6034409972. The cubic root of 71125667 is about 414.3259333639.

The spelling of 71125667 in words is "seventy-one million, one hundred twenty-five thousand, six hundred sixty-seven".