216426165 has 8 divisors (see below), whose sum is σ = 346281888. Its totient is φ = 115427280.

The previous prime is 216426157. The next prime is 216426187. The reversal of 216426165 is 561624612.

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

It is not a de Polignac number, because 216426165 - 2³ = 216426157 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 7 ways as a sum of consecutive naturals, for example, 7214191 + ... + 7214220.

It is an arithmetic number, because the mean of its divisors is an integer number (43285236).

Almost surely, 2^216426165 is an apocalyptic number.

It is an amenable number.

216426165 is a deficient number, since it is larger than the sum of its proper divisors (129855723).

216426165 is a wasteful number, since it uses less digits than its factorization.

216426165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14428419.

The product of its digits is 17280, while the sum is 33.

The square root of 216426165 is about 14711.4297401714. The cubic root of 216426165 is about 600.3943379947.

The spelling of 216426165 in words is "two hundred sixteen million, four hundred twenty-six thousand, one hundred sixty-five".