216645202 has 16 divisors (see below), whose sum is σ = 329945112. Its totient is φ = 106675200.

The previous prime is 216645199. The next prime is 216645203. The reversal of 216645202 is 202546612.

It can be written as a sum of positive squares in 4 ways, for example, as 216354681 + 290521 = 14709^2 + 539^2 .

It is not an unprimeable number, because it can be changed into a prime (216645203) 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, 36208 + ... + 41764.

Almost surely, 2^216645202 is an apocalyptic number.

216645202 is a deficient number, since it is larger than the sum of its proper divisors (113299910).

216645202 is a wasteful number, since it uses less digits than its factorization.

216645202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5853.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 216645202 is about 14718.8723073475. The cubic root of 216645202 is about 600.5968154147.

The spelling of 216645202 in words is "two hundred sixteen million, six hundred forty-five thousand, two hundred two".