216335655 has 12 divisors (see below), whose sum is σ = 374981880. Its totient is φ = 115378992.

The previous prime is 216335617. The next prime is 216335657. The reversal of 216335655 is 556533612.

It is not a de Polignac number, because 216335655 - 2⁷ = 216335527 is a prime.

It is a super-2 number, since 2×216335655² = 93602231248558050, which contains 22 as substring.

It is a congruent number.

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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2403685 + ... + 2403774.

It is an arithmetic number, because the mean of its divisors is an integer number (31248490).

Almost surely, 2^216335655 is an apocalyptic number.

216335655 is a deficient number, since it is larger than the sum of its proper divisors (158646225).

216335655 is a wasteful number, since it uses less digits than its factorization.

216335655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4807470 (or 4807467 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 216335655 is about 14708.3532388912. The cubic root of 216335655 is about 600.3106308197.

The spelling of 216335655 in words is "two hundred sixteen million, three hundred thirty-five thousand, six hundred fifty-five".