71345705 has 4 divisors (see below), whose sum is σ = 85614852. Its totient is φ = 57076560.

The previous prime is 71345669. The next prime is 71345707. The reversal of 71345705 is 50754317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50754317 = 149 ⋅340633.

It can be written as a sum of positive squares in 2 ways, for example, as 40398736 + 30946969 = 6356^2 + 5563^2 .

It is a de Polignac number, because none of the positive numbers 2^k-71345705 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71345707) 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, 7134566 + ... + 7134575.

It is an arithmetic number, because the mean of its divisors is an integer number (21403713).

Almost surely, 2^71345705 is an apocalyptic number.

It is an amenable number.

71345705 is a deficient number, since it is larger than the sum of its proper divisors (14269147).

71345705 is a wasteful number, since it uses less digits than its factorization.

71345705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14269146.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 71345705 is about 8446.6386805640. The cubic root of 71345705 is about 414.7527534857.

The spelling of 71345705 in words is "seventy-one million, three hundred forty-five thousand, seven hundred five".