216753764 has 6 divisors (see below), whose sum is σ = 379319094. Its totient is φ = 108376880.

The previous prime is 216753751. The next prime is 216753769. The reversal of 216753764 is 467357612.

It can be written as a sum of positive squares in only one way, i.e., 216384100 + 369664 = 14710^2 + 608^2 .

It is not an unprimeable number, because it can be changed into a prime (216753769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27094217 + ... + 27094224.

It is an arithmetic number, because the mean of its divisors is an integer number (63219849).

Almost surely, 2^216753764 is an apocalyptic number.

It is an amenable number.

216753764 is a deficient number, since it is larger than the sum of its proper divisors (162565330).

216753764 is a wasteful number, since it uses less digits than its factorization.

216753764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54188445 (or 54188443 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The square root of 216753764 is about 14722.5596959224. The cubic root of 216753764 is about 600.6971193569.

The spelling of 216753764 in words is "two hundred sixteen million, seven hundred fifty-three thousand, seven hundred sixty-four".