216536345 has 8 divisors (see below), whose sum is σ = 261010176. Its totient is φ = 172451376.

The previous prime is 216536339. The next prime is 216536357. The reversal of 216536345 is 543635612.

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

It is a cyclic number.

It is not a de Polignac number, because 216536345 - 2¹⁰ = 216535321 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 95987 + ... + 98216.

It is an arithmetic number, because the mean of its divisors is an integer number (32626272).

Almost surely, 2^216536345 is an apocalyptic number.

It is an amenable number.

216536345 is a deficient number, since it is larger than the sum of its proper divisors (44473831).

216536345 is a wasteful number, since it uses less digits than its factorization.

216536345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194431.

The product of its digits is 64800, while the sum is 35.

The square root of 216536345 is about 14715.1739711089. The cubic root of 216536345 is about 600.4962052615.

The spelling of 216536345 in words is "two hundred sixteen million, five hundred thirty-six thousand, three hundred forty-five".