216481662 has 12 divisors (see below), whose sum is σ = 469043640. Its totient is φ = 72160548.

The previous prime is 216481633. The next prime is 216481673. The reversal of 216481662 is 266184612.

216481662 is a `hidden beast` number, since 2 + 1 + 648 + 1 + 6 + 6 + 2 = 666.

It is a congruent number.

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, 6013362 + ... + 6013397.

It is an arithmetic number, because the mean of its divisors is an integer number (39086970).

Almost surely, 2^216481662 is an apocalyptic number.

216481662 is an abundant number, since it is smaller than the sum of its proper divisors (252561978).

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

216481662 is a wasteful number, since it uses less digits than its factorization.

216481662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12026767 (or 12026764 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 216481662 is about 14713.3158057591. The cubic root of 216481662 is about 600.4456522415.

The spelling of 216481662 in words is "two hundred sixteen million, four hundred eighty-one thousand, six hundred sixty-two".