71204005 has 8 divisors (see below), whose sum is σ = 86405400. Its totient is φ = 56322816.

The previous prime is 71203997. The next prime is 71204009. The reversal of 71204005 is 50040217.

It can be written as a sum of positive squares in 4 ways, for example, as 18887716 + 52316289 = 4346^2 + 7233^2 .

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 71204005 - 2³ = 71203997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71204009) 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, 79560 + ... + 80449.

It is an arithmetic number, because the mean of its divisors is an integer number (10800675).

Almost surely, 2^71204005 is an apocalyptic number.

It is an amenable number.

71204005 is a deficient number, since it is larger than the sum of its proper divisors (15201395).

71204005 is a wasteful number, since it uses less digits than its factorization.

71204005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160103.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 71204005 is about 8438.2465595644. The cubic root of 71204005 is about 414.4779907828.

It can be divided in two parts, 7120 and 4005, that multiplied together give a square (28515600 = 5340²).

The spelling of 71204005 in words is "seventy-one million, two hundred four thousand, five".