71608745 has 8 divisors (see below), whose sum is σ = 92540616. Its totient is φ = 52880256.

The previous prime is 71608741. The next prime is 71608753. The reversal of 71608745 is 54780617.

It can be written as a sum of positive squares in 4 ways, for example, as 779689 + 70829056 = 883^2 + 8416^2 .

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

It is not a de Polignac number, because 71608745 - 2² = 71608741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71608699 and 71608708.

It is not an unprimeable number, because it can be changed into a prime (71608741) 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, 550772 + ... + 550901.

It is an arithmetic number, because the mean of its divisors is an integer number (11567577).

Almost surely, 2^71608745 is an apocalyptic number.

It is an amenable number.

71608745 is a deficient number, since it is larger than the sum of its proper divisors (20931871).

71608745 is a wasteful number, since it uses less digits than its factorization.

71608745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101691.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 71608745 is about 8462.1950462040. The cubic root of 71608745 is about 415.2618369896.

The spelling of 71608745 in words is "seventy-one million, six hundred eight thousand, seven hundred forty-five".