216440606 has 8 divisors (see below), whose sum is σ = 324783120. Its totient is φ = 108179568.

The previous prime is 216440597. The next prime is 216440611. The reversal of 216440606 is 606044612.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13226 + ... + 24653.

It is an arithmetic number, because the mean of its divisors is an integer number (40597890).

Almost surely, 2^216440606 is an apocalyptic number.

216440606 is a deficient number, since it is larger than the sum of its proper divisors (108342514).

216440606 is a wasteful number, since it uses less digits than its factorization.

216440606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40738.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 216440606 is about 14711.9205408403. The cubic root of 216440606 is about 600.4076914353.

The spelling of 216440606 in words is "two hundred sixteen million, four hundred forty thousand, six hundred six".