216223623 has 108 divisors (see below), whose sum is σ = 418226328. Its totient is φ = 106404480.

The previous prime is 216223619. The next prime is 216223639. The reversal of 216223623 is 326322612.

216223623 is a `hidden beast` number, since 2 + 1 + 622 + 36 + 2 + 3 = 666.

It is not a de Polignac number, because 216223623 - 2² = 216223619 is a prime.

It is a super-2 number, since 2×216223623² = 93505310286492258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216223643) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 4079665 + ... + 4079717.

It is an arithmetic number, because the mean of its divisors is an integer number (3872466).

Almost surely, 2^216223623 is an apocalyptic number.

216223623 is a deficient number, since it is larger than the sum of its proper divisors (202002705).

216223623 is a wasteful number, since it uses less digits than its factorization.

216223623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 103 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 216223623 is about 14704.5442975973. The cubic root of 216223623 is about 600.2069869191.

The spelling of 216223623 in words is "two hundred sixteen million, two hundred twenty-three thousand, six hundred twenty-three".