216354265 has 8 divisors (see below), whose sum is σ = 260944200. Its totient is φ = 172204032.

The previous prime is 216354263. The next prime is 216354269. The reversal of 216354265 is 562453612.

It can be written as a sum of positive squares in 4 ways, for example, as 149719696 + 66634569 = 12236^2 + 8163^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 216354265 - 2¹ = 216354263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216354265.

It is not an unprimeable number, because it can be changed into a prime (216354263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108840 + ... + 110809.

It is an arithmetic number, because the mean of its divisors is an integer number (32618025).

Almost surely, 2^216354265 is an apocalyptic number.

It is an amenable number.

216354265 is a deficient number, since it is larger than the sum of its proper divisors (44589935).

216354265 is a wasteful number, since it uses less digits than its factorization.

216354265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219851.

The product of its digits is 43200, while the sum is 34.

The square root of 216354265 is about 14708.9858589911. The cubic root of 216354265 is about 600.3278439794.

The spelling of 216354265 in words is "two hundred sixteen million, three hundred fifty-four thousand, two hundred sixty-five".