216324465 has 24 divisors (see below), whose sum is σ = 402629760. Its totient is φ = 98890848.

The previous prime is 216324463. The next prime is 216324467. The reversal of 216324465 is 564423612.

It is an interprime number because it is at equal distance from previous prime (216324463) and next prime (216324467).

It is not a de Polignac number, because 216324465 - 2¹ = 216324463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216324461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146425 + ... + 147894.

It is an arithmetic number, because the mean of its divisors is an integer number (16776240).

Almost surely, 2^216324465 is an apocalyptic number.

It is an amenable number.

216324465 is a deficient number, since it is larger than the sum of its proper divisors (186305295).

216324465 is a wasteful number, since it uses less digits than its factorization.

216324465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294341 (or 294334 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 216324465 is about 14707.9728378863. The cubic root of 216324465 is about 600.3002802501.

The spelling of 216324465 in words is "two hundred sixteen million, three hundred twenty-four thousand, four hundred sixty-five".