216757012 has 6 divisors (see below), whose sum is σ = 379324778. Its totient is φ = 108378504.

The previous prime is 216757003. The next prime is 216757033. The reversal of 216757012 is 210757612.

It can be written as a sum of positive squares in only one way, i.e., 126202756 + 90554256 = 11234^2 + 9516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27094623 + ... + 27094630.

Almost surely, 2^216757012 is an apocalyptic number.

It is an amenable number.

216757012 is a deficient number, since it is larger than the sum of its proper divisors (162567766).

216757012 is a wasteful number, since it uses less digits than its factorization.

216757012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54189257 (or 54189255 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 216757012 is about 14722.6700024146. The cubic root of 216757012 is about 600.7001197731.

The spelling of 216757012 in words is "two hundred sixteen million, seven hundred fifty-seven thousand, twelve".