216768546 has 12 divisors (see below), whose sum is σ = 469665222. Its totient is φ = 72256176.

The previous prime is 216768509. The next prime is 216768551. The reversal of 216768546 is 645867612.

It can be written as a sum of positive squares in only one way, i.e., 191517921 + 25250625 = 13839^2 + 5025^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6021331 + ... + 6021366.

Almost surely, 2^216768546 is an apocalyptic number.

216768546 is an abundant number, since it is smaller than the sum of its proper divisors (252896676).

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

216768546 is a wasteful number, since it uses less digits than its factorization.

216768546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12042705 (or 12042702 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 216768546 is about 14723.0617060447. The cubic root of 216768546 is about 600.7107743339.

The spelling of 216768546 in words is "two hundred sixteen million, seven hundred sixty-eight thousand, five hundred forty-six".