216903716 has 6 divisors (see below), whose sum is σ = 379581510. Its totient is φ = 108451856.

The previous prime is 216903691. The next prime is 216903749. The reversal of 216903716 is 617309612.

It can be written as a sum of positive squares in only one way, i.e., 188238400 + 28665316 = 13720^2 + 5354^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27112961 + ... + 27112968.

It is an arithmetic number, because the mean of its divisors is an integer number (63263585).

Almost surely, 2^216903716 is an apocalyptic number.

It is an amenable number.

216903716 is a deficient number, since it is larger than the sum of its proper divisors (162677794).

216903716 is a wasteful number, since it uses less digits than its factorization.

216903716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54225933 (or 54225931 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 216903716 is about 14727.6514081506. The cubic root of 216903716 is about 600.8356097943.

The spelling of 216903716 in words is "two hundred sixteen million, nine hundred three thousand, seven hundred sixteen".