70017 has 4 divisors (see below), whose sum is σ = 93360. Its totient is φ = 46676.

The previous prime is 70009. The next prime is 70019. The reversal of 70017 is 71007.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71007 = 3 ⋅23669.

It is a cyclic number.

It is not a de Polignac number, because 70017 - 2³ = 70009 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 69978 and 70005.

It is not an unprimeable number, because it can be changed into a prime (70019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11667 + ... + 11672.

It is an arithmetic number, because the mean of its divisors is an integer number (23340).

2⁷⁰⁰¹⁷ is an apocalyptic number.

It is an amenable number.

70017 is a deficient number, since it is larger than the sum of its proper divisors (23343).

70017 is a wasteful number, since it uses less digits than its factorization.

70017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23342.

The product of its (nonzero) digits is 49, while the sum is 15.

The square root of 70017 is about 264.6072561363. The cubic root of 70017 is about 41.2161890066.

Subtracting 70017 from its reverse (71007), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 700 and 17, that added together give a palindrome (717).

The spelling of 70017 in words is "seventy thousand, seventeen", and thus it is an iban number.