216530835 has 8 divisors (see below), whose sum is σ = 346449360. Its totient is φ = 115483104.

The previous prime is 216530827. The next prime is 216530837. The reversal of 216530835 is 538035612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216530835 - 2³ = 216530827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216530796 and 216530805.

It is not an unprimeable number, because it can be changed into a prime (216530837) 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, 7217680 + ... + 7217709.

It is an arithmetic number, because the mean of its divisors is an integer number (43306170).

Almost surely, 2^216530835 is an apocalyptic number.

216530835 is a deficient number, since it is larger than the sum of its proper divisors (129918525).

216530835 is a wasteful number, since it uses less digits than its factorization.

216530835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14435397.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 216530835 is about 14714.9867482101. The cubic root of 216530835 is about 600.4911117946.

The spelling of 216530835 in words is "two hundred sixteen million, five hundred thirty thousand, eight hundred thirty-five".