216090633 has 12 divisors (see below), whose sum is σ = 316695344. Its totient is φ = 130963800.

The previous prime is 216090617. The next prime is 216090649. The reversal of 216090633 is 336090612.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (216090617) and next prime (216090649).

It is not a de Polignac number, because 216090633 - 2⁴ = 216090617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216090633.

It is not an unprimeable number, because it can be changed into a prime (216090613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297283 + ... + 298008.

Almost surely, 2^216090633 is an apocalyptic number.

It is an amenable number.

216090633 is a deficient number, since it is larger than the sum of its proper divisors (100604711).

216090633 is a wasteful number, since it uses less digits than its factorization.

216090633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595316 (or 595305 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 216090633 is about 14700.0215305965. The cubic root of 216090633 is about 600.0839077097.

The spelling of 216090633 in words is "two hundred sixteen million, ninety thousand, six hundred thirty-three".