70617271 has 4 divisors (see below), whose sum is σ = 70748344. Its totient is φ = 70486200.

The previous prime is 70617259. The next prime is 70617289. The reversal of 70617271 is 17271607.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70617271 - 2²¹ = 68520119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70617241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64725 + ... + 65806.

It is an arithmetic number, because the mean of its divisors is an integer number (17687086).

Almost surely, 2^70617271 is an apocalyptic number.

70617271 is a deficient number, since it is larger than the sum of its proper divisors (131073).

70617271 is a wasteful number, since it uses less digits than its factorization.

70617271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131072.

The product of its (nonzero) digits is 4116, while the sum is 31.

The square root of 70617271 is about 8403.4082966377. The cubic root of 70617271 is about 413.3363912509.

Adding to 70617271 its reverse (17271607), we get a palindrome (87888878).

The spelling of 70617271 in words is "seventy million, six hundred seventeen thousand, two hundred seventy-one".