216705350 has 12 divisors (see below), whose sum is σ = 403072044. Its totient is φ = 86682120.

The previous prime is 216705343. The next prime is 216705361. The reversal of 216705350 is 53507612.

216705350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216705350² = 93922417437245000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2167004 + ... + 2167103.

It is an arithmetic number, because the mean of its divisors is an integer number (33589337).

Almost surely, 2^216705350 is an apocalyptic number.

216705350 is a deficient number, since it is larger than the sum of its proper divisors (186366694).

216705350 is a wasteful number, since it uses less digits than its factorization.

216705350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334119 (or 4334114 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 216705350 is about 14720.9153927329. The cubic root of 216705350 is about 600.6523922354.

The spelling of 216705350 in words is "two hundred sixteen million, seven hundred five thousand, three hundred fifty".