70105217 has 8 divisors (see below), whose sum is σ = 86283456. Its totient is φ = 55467792.

The previous prime is 70105207. The next prime is 70105253. The reversal of 70105217 is 71250107.

It is a happy number.

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 70105217 - 2⁴ = 70105201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70105192 and 70105201.

It is not an unprimeable number, because it can be changed into a prime (70105207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385103 + ... + 385284.

It is an arithmetic number, because the mean of its divisors is an integer number (10785432).

Almost surely, 2^70105217 is an apocalyptic number.

It is an amenable number.

70105217 is a deficient number, since it is larger than the sum of its proper divisors (16178239).

70105217 is a wasteful number, since it uses less digits than its factorization.

70105217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770407.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 70105217 is about 8372.8858227018. The cubic root of 70105217 is about 412.3349167399.

The spelling of 70105217 in words is "seventy million, one hundred five thousand, two hundred seventeen".