216454365 has 48 divisors (see below), whose sum is σ = 396564480. Its totient is φ = 108915840.

The previous prime is 216454361. The next prime is 216454367. The reversal of 216454365 is 563454612.

216454365 is a `hidden beast` number, since 2 + 1 + 645 + 4 + 3 + 6 + 5 = 666.

It is not a de Polignac number, because 216454365 - 2² = 216454361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216454361) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 327135 + ... + 327795.

It is an arithmetic number, because the mean of its divisors is an integer number (8261760).

Almost surely, 2^216454365 is an apocalyptic number.

It is an amenable number.

216454365 is a deficient number, since it is larger than the sum of its proper divisors (180110115).

216454365 is a wasteful number, since it uses less digits than its factorization.

216454365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 1071 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 216454365 is about 14712.3881474083. The cubic root of 216454365 is about 600.4204136851.

It can be divided in two parts, 216 and 454365, that added together give a triangular number (454581 = T₉₅₃).

The spelling of 216454365 in words is "two hundred sixteen million, four hundred fifty-four thousand, three hundred sixty-five".