70216 has 16 divisors (see below), whose sum is σ = 134640. Its totient is φ = 34320.

The previous prime is 70207. The next prime is 70223. The reversal of 70216 is 61207.

70216 = T₈ + T₉ + ... + T₇₄.

It is a plaindrome in base 16.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 70216.

It is an unprimeable 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, 471 + ... + 601.

It is an arithmetic number, because the mean of its divisors is an integer number (8415).

2⁷⁰²¹⁶ is an apocalyptic number.

It is an amenable number.

70216 is a deficient number, since it is larger than the sum of its proper divisors (64424).

70216 is a wasteful number, since it uses less digits than its factorization.

70216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 70216 is about 264.9830183238. The cubic root of 70216 is about 41.2551998342.

Subtracting from 70216 its reverse (61207), we obtain a palindrome (9009).

The spelling of 70216 in words is "seventy thousand, two hundred sixteen".