71705011 has 8 divisors (see below), whose sum is σ = 82230624. Its totient is φ = 61249920.

The previous prime is 71705009. The next prime is 71705021. The reversal of 71705011 is 11050717.

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 71705011 - 2¹ = 71705009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71705021) by changing a digit.

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, 15430 + ... + 19531.

It is an arithmetic number, because the mean of its divisors is an integer number (10278828).

Almost surely, 2^71705011 is an apocalyptic number.

71705011 is a deficient number, since it is larger than the sum of its proper divisors (10525613).

71705011 is a wasteful number, since it uses less digits than its factorization.

71705011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35261.

The product of its (nonzero) digits is 245, while the sum is 22.

The square root of 71705011 is about 8467.8811399311. The cubic root of 71705011 is about 415.4478370647.

Adding to 71705011 its reverse (11050717), we get a palindrome (82755728).

The spelling of 71705011 in words is "seventy-one million, seven hundred five thousand, eleven".