217070196 has 72 divisors (see below), whose sum is σ = 596776320. Its totient is φ = 61221888.

The previous prime is 217070179. The next prime is 217070221. The reversal of 217070196 is 691070712.

217070196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44116 + ... + 48788.

It is an arithmetic number, because the mean of its divisors is an integer number (8288560).

Almost surely, 2^217070196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 217070196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298388160).

217070196 is an abundant number, since it is smaller than the sum of its proper divisors (379706124).

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

217070196 is a wasteful number, since it uses less digits than its factorization.

217070196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4773 (or 4764 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 217070196 is about 14733.3022774937. The cubic root of 217070196 is about 600.9892901673.

The spelling of 217070196 in words is "two hundred seventeen million, seventy thousand, one hundred ninety-six".