70518 has 32 divisors (see below), whose sum is σ = 170496. Its totient is φ = 19008.

The previous prime is 70507. The next prime is 70529. The reversal of 70518 is 81507.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70507) and next prime (70529).

It is a Harshad number since it is a multiple of its sum of digits (21).

70518 is a modest number, since divided by 518 gives 70 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 70494 and 70503.

It is a congruent number.

It is an unprimeable number.

70518 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930 + ... + 1002.

It is an arithmetic number, because the mean of its divisors is an integer number (5328).

2⁷⁰⁵¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85248).

70518 is an abundant number, since it is smaller than the sum of its proper divisors (99978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70518 is a wasteful number, since it uses less digits than its factorization.

70518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 70518 is about 265.5522547447. The cubic root of 70518 is about 41.3142616373.

The spelling of 70518 in words is "seventy thousand, five hundred eighteen".