71709005 has 8 divisors (see below), whose sum is σ = 86106624. Its totient is φ = 57330000.

The previous prime is 71708999. The next prime is 71709017. The reversal of 71709005 is 50090717.

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

It is not a de Polignac number, because 71709005 - 2¹⁸ = 71446861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6080 + ... + 13430.

It is an arithmetic number, because the mean of its divisors is an integer number (10763328).

Almost surely, 2^71709005 is an apocalyptic number.

It is an amenable number.

71709005 is a deficient number, since it is larger than the sum of its proper divisors (14397619).

71709005 is a wasteful number, since it uses less digits than its factorization.

71709005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9307.

The product of its (nonzero) digits is 2205, while the sum is 29.

The square root of 71709005 is about 8468.1169689607. The cubic root of 71709005 is about 415.4555504627.

The spelling of 71709005 in words is "seventy-one million, seven hundred nine thousand, five".