71361005 has 4 divisors (see below), whose sum is σ = 85633212. Its totient is φ = 57088800.

The previous prime is 71360987. The next prime is 71361011. The reversal of 71361005 is 50016317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50016317 = 13 ⋅3847409.

It can be written as a sum of positive squares in 2 ways, for example, as 11437924 + 59923081 = 3382^2 + 7741^2 .

It is not a de Polignac number, because 71361005 - 2⁸ = 71360749 is a prime.

It is a super-2 number, since 2×71361005² = 10184786069220050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7136096 + ... + 7136105.

It is an arithmetic number, because the mean of its divisors is an integer number (21408303).

Almost surely, 2^71361005 is an apocalyptic number.

It is an amenable number.

71361005 is a deficient number, since it is larger than the sum of its proper divisors (14272207).

71361005 is a wasteful number, since it uses less digits than its factorization.

71361005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14272206.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 71361005 is about 8447.5443177293. The cubic root of 71361005 is about 414.7823991085.

The spelling of 71361005 in words is "seventy-one million, three hundred sixty-one thousand, five".