216560316 has 24 divisors (see below), whose sum is σ = 577494400. Its totient is φ = 61874352.

The previous prime is 216560303. The next prime is 216560317. The reversal of 216560316 is 613065612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216560317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1288966 + ... + 1289133.

Almost surely, 2^216560316 is an apocalyptic number.

It is an amenable number.

216560316 is an abundant number, since it is smaller than the sum of its proper divisors (360934084).

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

216560316 is a wasteful number, since it uses less digits than its factorization.

216560316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578113 (or 2578111 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 216560316 is about 14715.9884479433. The cubic root of 216560316 is about 600.5183631482.

It can be divided in two parts, 2165 and 60316, that added together give a triangular number (62481 = T₃₅₃).

The spelling of 216560316 in words is "two hundred sixteen million, five hundred sixty thousand, three hundred sixteen".