71169473 has 4 divisors (see below), whose sum is σ = 71969220. Its totient is φ = 70369728.

The previous prime is 71169467. The next prime is 71169491. The reversal of 71169473 is 37496117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37496117 = 107 ⋅350431.

It can be written as a sum of positive squares in 2 ways, for example, as 45535504 + 25633969 = 6748^2 + 5063^2 .

It is a cyclic number.

It is not a de Polignac number, because 71169473 - 2⁶ = 71169409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71169433) 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, 399740 + ... + 399917.

It is an arithmetic number, because the mean of its divisors is an integer number (17992305).

Almost surely, 2^71169473 is an apocalyptic number.

It is an amenable number.

71169473 is a deficient number, since it is larger than the sum of its proper divisors (799747).

71169473 is an equidigital number, since it uses as much as digits as its factorization.

71169473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799746.

The product of its digits is 31752, while the sum is 38.

The square root of 71169473 is about 8436.2001517271. The cubic root of 71169473 is about 414.4109764420.

The spelling of 71169473 in words is "seventy-one million, one hundred sixty-nine thousand, four hundred seventy-three".