217696848 has 80 divisors (see below), whose sum is σ = 574516800. Its totient is φ = 71019520.

The previous prime is 217696841. The next prime is 217696867. The reversal of 217696848 is 848696712.

217696848 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 217696848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217696841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559438 + ... + 559826.

It is an arithmetic number, because the mean of its divisors is an integer number (7181460).

Almost surely, 2^217696848 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 217696848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287258400).

217696848 is an abundant number, since it is smaller than the sum of its proper divisors (356819952).

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

217696848 is a wasteful number, since it uses less digits than its factorization.

217696848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 614 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 217696848 is about 14754.5534666421. The cubic root of 217696848 is about 601.5670592015.

The spelling of 217696848 in words is "two hundred seventeen million, six hundred ninety-six thousand, eight hundred forty-eight".