70840717 has 8 divisors (see below), whose sum is σ = 75673656. Its totient is φ = 66081792.

The previous prime is 70840711. The next prime is 70840753. The reversal of 70840717 is 71704807.

It can be written as a sum of positive squares in 4 ways, for example, as 12257001 + 58583716 = 3501^2 + 7654^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 70840717 - 2⁷ = 70840589 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 (70840711) 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 7 ways as a sum of consecutive naturals, for example, 16518 + ... + 20359.

It is an arithmetic number, because the mean of its divisors is an integer number (9459207).

Almost surely, 2^70840717 is an apocalyptic number.

It is an amenable number.

70840717 is a deficient number, since it is larger than the sum of its proper divisors (4832939).

70840717 is a wasteful number, since it uses less digits than its factorization.

70840717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37007.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 70840717 is about 8416.6927590355. The cubic root of 70840717 is about 413.7718896303.

The spelling of 70840717 in words is "seventy million, eight hundred forty thousand, seven hundred seventeen".