216610532 has 24 divisors (see below), whose sum is σ = 403708536. Its totient is φ = 101339648.

The previous prime is 216610529. The next prime is 216610561. The reversal of 216610532 is 235016612.

It can be written as a sum of positive squares in 4 ways, for example, as 80748196 + 135862336 = 8986^2 + 11656^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2558 + ... + 20970.

It is an arithmetic number, because the mean of its divisors is an integer number (16821189).

Almost surely, 2^216610532 is an apocalyptic number.

It is an amenable number.

216610532 is a deficient number, since it is larger than the sum of its proper divisors (187098004).

216610532 is a wasteful number, since it uses less digits than its factorization.

216610532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18607 (or 18605 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 216610532 is about 14717.6945205423. The cubic root of 216610532 is about 600.5647756214.

The spelling of 216610532 in words is "two hundred sixteen million, six hundred ten thousand, five hundred thirty-two".