216883087 has 4 divisors (see below), whose sum is σ = 220120216. Its totient is φ = 213645960.

The previous prime is 216883063. The next prime is 216883103. The reversal of 216883087 is 780388612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216883087 - 2⁷ = 216882959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216883027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618464 + ... + 1618597.

It is an arithmetic number, because the mean of its divisors is an integer number (55030054).

Almost surely, 2^216883087 is an apocalyptic number.

216883087 is a deficient number, since it is larger than the sum of its proper divisors (3237129).

216883087 is an equidigital number, since it uses as much as digits as its factorization.

216883087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237128.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 216883087 is about 14726.9510422219. The cubic root of 216883087 is about 600.8165613566.

The spelling of 216883087 in words is "two hundred sixteen million, eight hundred eighty-three thousand, eighty-seven".