216969796 has 6 divisors (see below), whose sum is σ = 379697150. Its totient is φ = 108484896.

The previous prime is 216969791. The next prime is 216969811. The reversal of 216969796 is 697969612.

216969796 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 186322500 + 30647296 = 13650^2 + 5536^2 .

It is not an unprimeable number, because it can be changed into a prime (216969791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27121221 + ... + 27121228.

Almost surely, 2^216969796 is an apocalyptic number.

It is an amenable number.

216969796 is a deficient number, since it is larger than the sum of its proper divisors (162727354).

216969796 is a wasteful number, since it uses less digits than its factorization.

216969796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54242453 (or 54242451 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 55.

The square root of 216969796 is about 14729.8946364188. The cubic root of 216969796 is about 600.8966187166.

The spelling of 216969796 in words is "two hundred sixteen million, nine hundred sixty-nine thousand, seven hundred ninety-six".