216435606 has 8 divisors (see below), whose sum is σ = 432871224. Its totient is φ = 72145200.

The previous prime is 216435577. The next prime is 216435617. The reversal of 216435606 is 606534612.

It is a sphenic number, since it is the product of 3 distinct primes.

216435606 is an admirable number.

It is a super-3 number, since 3×216435606³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18036295 + ... + 18036306.

It is an arithmetic number, because the mean of its divisors is an integer number (54108903).

Almost surely, 2^216435606 is an apocalyptic number.

216435606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

216435606 is a wasteful number, since it uses less digits than its factorization.

216435606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36072606.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 216435606 is about 14711.7506096317. The cubic root of 216435606 is about 600.4030680552.

The spelling of 216435606 in words is "two hundred sixteen million, four hundred thirty-five thousand, six hundred six".