216088623 has 6 divisors (see below), whose sum is σ = 312128024. Its totient is φ = 144059076.

The previous prime is 216088619. The next prime is 216088633. The reversal of 216088623 is 326880612.

216088623 is a `hidden beast` number, since 21 + 6 + 0 + 8 + 8 + 623 = 666.

It is not a de Polignac number, because 216088623 - 2² = 216088619 is a prime.

It is a super-2 number, since 2×216088623² = 93388585980072258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216088633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12004915 + ... + 12004932.

Almost surely, 2^216088623 is an apocalyptic number.

216088623 is a deficient number, since it is larger than the sum of its proper divisors (96039401).

216088623 is a wasteful number, since it uses less digits than its factorization.

216088623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24009853 (or 24009850 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 216088623 is about 14699.9531631907. The cubic root of 216088623 is about 600.0820471133.

The spelling of 216088623 in words is "two hundred sixteen million, eighty-eight thousand, six hundred twenty-three".