70216717 has 6 divisors (see below), whose sum is σ = 70890638. Its totient is φ = 69549144.

The previous prime is 70216703. The next prime is 70216753. The reversal of 70216717 is 71761207.

It can be written as a sum of positive squares in only one way, i.e., 69655716 + 561001 = 8346^2 + 749^2 .

It is a de Polignac number, because none of the positive numbers 2^k-70216717 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 (70216777) 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 5 ways as a sum of consecutive naturals, for example, 8383 + ... + 14515.

Almost surely, 2^70216717 is an apocalyptic number.

It is an amenable number.

70216717 is a deficient number, since it is larger than the sum of its proper divisors (673921).

70216717 is an equidigital number, since it uses as much as digits as its factorization.

70216717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6347 (or 6240 counting only the distinct ones).

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

The square root of 70216717 is about 8379.5415745732. The cubic root of 70216717 is about 412.5534025750.

The spelling of 70216717 in words is "seventy million, two hundred sixteen thousand, seven hundred seventeen".