71985175 has 12 divisors (see below), whose sum is σ = 89588016. Its totient is φ = 57377600.

The previous prime is 71985169. The next prime is 71985209. The reversal of 71985175 is 57158917.

It is not a de Polignac number, because 71985175 - 2⁹ = 71984663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1902 + ... + 12148.

It is an arithmetic number, because the mean of its divisors is an integer number (7465668).

Almost surely, 2^71985175 is an apocalyptic number.

71985175 is a deficient number, since it is larger than the sum of its proper divisors (17602841).

71985175 is a wasteful number, since it uses less digits than its factorization.

71985175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10538 (or 10533 counting only the distinct ones).

The product of its digits is 88200, while the sum is 43.

The square root of 71985175 is about 8484.4077577636. The cubic root of 71985175 is about 415.9882096480.

The spelling of 71985175 in words is "seventy-one million, nine hundred eighty-five thousand, one hundred seventy-five".