71168305 has 8 divisors (see below), whose sum is σ = 91971432. Its totient is φ = 52555008.

The previous prime is 71168303. The next prime is 71168309. The reversal of 71168305 is 50386117.

It can be written as a sum of positive squares in 4 ways, for example, as 10810944 + 60357361 = 3288^2 + 7769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71168305 - 2¹ = 71168303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71168303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547384 + ... + 547513.

It is an arithmetic number, because the mean of its divisors is an integer number (11496429).

Almost surely, 2^71168305 is an apocalyptic number.

It is an amenable number.

71168305 is a deficient number, since it is larger than the sum of its proper divisors (20803127).

71168305 is a wasteful number, since it uses less digits than its factorization.

71168305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094915.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 71168305 is about 8436.1309259636. The cubic root of 71168305 is about 414.4087093901.

The spelling of 71168305 in words is "seventy-one million, one hundred sixty-eight thousand, three hundred five".