216772383 has 4 divisors (see below), whose sum is σ = 289029848. Its totient is φ = 144514920.

The previous prime is 216772379. The next prime is 216772421. The reversal of 216772383 is 383277612.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 216772383 - 2² = 216772379 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216772343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36128728 + ... + 36128733.

It is an arithmetic number, because the mean of its divisors is an integer number (72257462).

Almost surely, 2^216772383 is an apocalyptic number.

216772383 is a deficient number, since it is larger than the sum of its proper divisors (72257465).

216772383 is an equidigital number, since it uses as much as digits as its factorization.

216772383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72257464.

The product of its digits is 84672, while the sum is 39.

The square root of 216772383 is about 14723.1920112454. The cubic root of 216772383 is about 600.7143186883.

The spelling of 216772383 in words is "two hundred sixteen million, seven hundred seventy-two thousand, three hundred eighty-three".