216760087 has 2 divisors, whose sum is σ = 216760088. Its totient is φ = 216760086.

The previous prime is 216760079. The next prime is 216760207. The reversal of 216760087 is 780067612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216760087 - 2³ = 216760079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216760787) 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 as a sum of consecutive naturals, namely, 108380043 + 108380044.

It is an arithmetic number, because the mean of its divisors is an integer number (108380044).

Almost surely, 2^216760087 is an apocalyptic number.

216760087 is a deficient number, since it is larger than the sum of its proper divisors (1).

216760087 is an equidigital number, since it uses as much as digits as its factorization.

216760087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 216760087 is about 14722.7744328302. The cubic root of 216760087 is about 600.7029603489.

The spelling of 216760087 in words is "two hundred sixteen million, seven hundred sixty thousand, eighty-seven".