216066136 has 32 divisors (see below), whose sum is σ = 475952400. Its totient is φ = 90656640.

The previous prime is 216066133. The next prime is 216066139. The reversal of 216066136 is 631660612.

It is an interprime number because it is at equal distance from previous prime (216066133) and next prime (216066139).

It is a junction number, because it is equal to n+sod(n) for n = 216066098 and 216066107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216066133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93291 + ... + 95578.

Almost surely, 2^216066136 is an apocalyptic number.

216066136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

216066136 is an abundant number, since it is smaller than the sum of its proper divisors (259886264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216066136 is a wasteful number, since it uses less digits than its factorization.

216066136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188899 (or 188895 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 216066136 is about 14699.1882769084. The cubic root of 216066136 is about 600.0612307881.

The spelling of 216066136 in words is "two hundred sixteen million, sixty-six thousand, one hundred thirty-six".