216086361 has 4 divisors (see below), whose sum is σ = 288115152. Its totient is φ = 144057572.

The previous prime is 216086347. The next prime is 216086363. The reversal of 216086361 is 163680612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216086361 - 2²⁵ = 182531929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216086363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36014391 + ... + 36014396.

It is an arithmetic number, because the mean of its divisors is an integer number (72028788).

Almost surely, 2^216086361 is an apocalyptic number.

It is an amenable number.

216086361 is a deficient number, since it is larger than the sum of its proper divisors (72028791).

216086361 is an equidigital number, since it uses as much as digits as its factorization.

216086361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72028790.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 216086361 is about 14699.8762239687. The cubic root of 216086361 is about 600.0799532342.

The spelling of 216086361 in words is "two hundred sixteen million, eighty-six thousand, three hundred sixty-one".