216719073 has 24 divisors (see below), whose sum is σ = 331531200. Its totient is φ = 136037664.

The previous prime is 216719039. The next prime is 216719081. The reversal of 216719073 is 370917612.

It is a happy number.

It is not a de Polignac number, because 216719073 - 2²⁴ = 199941857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216719093) 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 23 ways as a sum of consecutive naturals, for example, 24763 + ... + 32351.

It is an arithmetic number, because the mean of its divisors is an integer number (13813800).

Almost surely, 2^216719073 is an apocalyptic number.

It is an amenable number.

216719073 is a deficient number, since it is larger than the sum of its proper divisors (114812127).

216719073 is a wasteful number, since it uses less digits than its factorization.

216719073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7781 (or 7778 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 216719073 is about 14721.3814908792. The cubic root of 216719073 is about 600.6650708622.

The spelling of 216719073 in words is "two hundred sixteen million, seven hundred nineteen thousand, seventy-three".