70717217 has 4 divisors (see below), whose sum is σ = 71686020. Its totient is φ = 69748416.

The previous prime is 70717181. The next prime is 70717219. The reversal of 70717217 is 71271707.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16900321 + 53816896 = 4111^2 + 7336^2 .

It is a cyclic number.

It is not a de Polignac number, because 70717217 - 2¹² = 70713121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70717219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484292 + ... + 484437.

It is an arithmetic number, because the mean of its divisors is an integer number (17921505).

Almost surely, 2^70717217 is an apocalyptic number.

It is an amenable number.

70717217 is a deficient number, since it is larger than the sum of its proper divisors (968803).

70717217 is an equidigital number, since it uses as much as digits as its factorization.

70717217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968802.

The product of its (nonzero) digits is 4802, while the sum is 32.

The square root of 70717217 is about 8409.3529477600. The cubic root of 70717217 is about 413.5313003438.

The spelling of 70717217 in words is "seventy million, seven hundred seventeen thousand, two hundred seventeen".