216833506 has 16 divisors (see below), whose sum is σ = 331017984. Its totient is φ = 106506144.

The previous prime is 216833501. The next prime is 216833531. The reversal of 216833506 is 605338612.

It is not an unprimeable number, because it can be changed into a prime (216833501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35575 + ... + 41221.

It is an arithmetic number, because the mean of its divisors is an integer number (20688624).

Almost surely, 2^216833506 is an apocalyptic number.

216833506 is a deficient number, since it is larger than the sum of its proper divisors (114184478).

216833506 is a wasteful number, since it uses less digits than its factorization.

216833506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 216833506 is about 14725.2676036804. The cubic root of 216833506 is about 600.7707742360.

The spelling of 216833506 in words is "two hundred sixteen million, eight hundred thirty-three thousand, five hundred six".