216335656 has 16 divisors (see below), whose sum is σ = 405820800. Its totient is φ = 108116784.

The previous prime is 216335617. The next prime is 216335657. The reversal of 216335656 is 656533612.

It is a super-2 number, since 2×216335656² = 93602232113900672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216335657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16425 + ... + 26503.

It is an arithmetic number, because the mean of its divisors is an integer number (25363800).

Almost surely, 2^216335656 is an apocalyptic number.

It is an amenable number.

216335656 is a deficient number, since it is larger than the sum of its proper divisors (189485144).

216335656 is a wasteful number, since it uses less digits than its factorization.

216335656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12768 (or 12764 counting only the distinct ones).

The product of its digits is 97200, while the sum is 37.

The square root of 216335656 is about 14708.3532728854. The cubic root of 216335656 is about 600.3106317447.

The spelling of 216335656 in words is "two hundred sixteen million, three hundred thirty-five thousand, six hundred fifty-six".