216466045 has 16 divisors (see below), whose sum is σ = 266181552. Its totient is φ = 168929280.

The previous prime is 216466037. The next prime is 216466057. The reversal of 216466045 is 540664612.

It can be written as a sum of positive squares in 8 ways, for example, as 85340644 + 131125401 = 9238^2 + 11451^2 .

It is not a de Polignac number, because 216466045 - 2³ = 216466037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216466045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45709 + ... + 50221.

It is an arithmetic number, because the mean of its divisors is an integer number (16636347).

Almost surely, 2^216466045 is an apocalyptic number.

It is an amenable number.

216466045 is a deficient number, since it is larger than the sum of its proper divisors (49715507).

216466045 is a wasteful number, since it uses less digits than its factorization.

216466045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 216466045 is about 14712.7850864478. The cubic root of 216466045 is about 600.4312131659.

The spelling of 216466045 in words is "two hundred sixteen million, four hundred sixty-six thousand, forty-five".