216562071 has 16 divisors (see below), whose sum is σ = 316126080. Its totient is φ = 130780320.

The previous prime is 216562069. The next prime is 216562097. The reversal of 216562071 is 170265612.

It is not a de Polignac number, because 216562071 - 2¹ = 216562069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216562471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2256 + ... + 20933.

It is an arithmetic number, because the mean of its divisors is an integer number (19757880).

Almost surely, 2^216562071 is an apocalyptic number.

216562071 is a deficient number, since it is larger than the sum of its proper divisors (99564009).

216562071 is a wasteful number, since it uses less digits than its factorization.

216562071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23486.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 216562071 is about 14716.0480768445. The cubic root of 216562071 is about 600.5199853397.

The spelling of 216562071 in words is "two hundred sixteen million, five hundred sixty-two thousand, seventy-one".