216763433 has 4 divisors (see below), whose sum is σ = 222050388. Its totient is φ = 211476480.

The previous prime is 216763403. The next prime is 216763471. The reversal of 216763433 is 334367612.

216763433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31449664 + 185313769 = 5608^2 + 13613^2 .

It is a cyclic number.

It is not a de Polignac number, because 216763433 - 2¹⁰ = 216762409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216763393 and 216763402.

It is not an unprimeable number, because it can be changed into a prime (216763403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2643416 + ... + 2643497.

It is an arithmetic number, because the mean of its divisors is an integer number (55512597).

Almost surely, 2^216763433 is an apocalyptic number.

It is an amenable number.

216763433 is a deficient number, since it is larger than the sum of its proper divisors (5286955).

216763433 is an equidigital number, since it uses as much as digits as its factorization.

216763433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286954.

The product of its digits is 54432, while the sum is 35.

The square root of 216763433 is about 14722.8880658653. Note that the first 3 decimals coincide. The cubic root of 216763433 is about 600.7060512343.

The spelling of 216763433 in words is "two hundred sixteen million, seven hundred sixty-three thousand, four hundred thirty-three".