216162612 has 18 divisors (see below), whose sum is σ = 546411138. Its totient is φ = 72054192.

The previous prime is 216162581. The next prime is 216162637. The reversal of 216162612 is 216261612.

216162612 is a `hidden beast` number, since 21 + 6 + 1 + 626 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 111386916 + 104775696 = 10554^2 + 10236^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a nude number because it is divisible by every one of its digits.

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, 3002223 + ... + 3002294.

Almost surely, 2^216162612 is an apocalyptic number.

It is an amenable number.

216162612 is an abundant number, since it is smaller than the sum of its proper divisors (330248526).

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

216162612 is a wasteful number, since it uses less digits than its factorization.

216162612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004527 (or 6004522 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 216162612 is about 14702.4695884739. The cubic root of 216162612 is about 600.1505288986.

The spelling of 216162612 in words is "two hundred sixteen million, one hundred sixty-two thousand, six hundred twelve".