70018 has 8 divisors (see below), whose sum is σ = 113148. Its totient is φ = 32304.

The previous prime is 70009. The next prime is 70019. The reversal of 70018 is 81007.

It can be written as a sum of positive squares in 2 ways, for example, as 66049 + 3969 = 257^2 + 63^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 69983 and 70010.

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

70018 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 1321 + ... + 1372.

2⁷⁰⁰¹⁸ is an apocalyptic number.

70018 is a deficient number, since it is larger than the sum of its proper divisors (43130).

70018 is a wasteful number, since it uses less digits than its factorization.

70018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 70018 is about 264.6091457225. The cubic root of 70018 is about 41.2163852256.

The spelling of 70018 in words is "seventy thousand, eighteen".