71660241 has 8 divisors (see below), whose sum is σ = 106163360. Its totient is φ = 47773476.

The previous prime is 71660227. The next prime is 71660257. The reversal of 71660241 is 14206617.

71660241 is a `hidden beast` number, since 7 + 16 + 602 + 41 = 666.

It is not a de Polignac number, because 71660241 - 2⁹ = 71659729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2654083 = 71660241 / (7 + 1 + 6 + 6 + 0 + 2 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71660261) 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, 1327015 + ... + 1327068.

It is an arithmetic number, because the mean of its divisors is an integer number (13270420).

Almost surely, 2^71660241 is an apocalyptic number.

It is an amenable number.

71660241 is a deficient number, since it is larger than the sum of its proper divisors (34503119).

71660241 is a wasteful number, since it uses less digits than its factorization.

71660241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654092 (or 2654086 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 71660241 is about 8465.2372087260. The cubic root of 71660241 is about 415.3613555589.

Adding to 71660241 its reverse (14206617), we get a palindrome (85866858).

The spelling of 71660241 in words is "seventy-one million, six hundred sixty thousand, two hundred forty-one".