216120679 has 2 divisors, whose sum is σ = 216120680. Its totient is φ = 216120678.

The previous prime is 216120647. The next prime is 216120683. The reversal of 216120679 is 976021612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216120679 - 2⁵ = 216120647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216120689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108060339 + 108060340.

It is an arithmetic number, because the mean of its divisors is an integer number (108060340).

Almost surely, 2^216120679 is an apocalyptic number.

216120679 is a deficient number, since it is larger than the sum of its proper divisors (1).

216120679 is an equidigital number, since it uses as much as digits as its factorization.

216120679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 216120679 is about 14701.0434663666. The cubic root of 216120679 is about 600.1117190116. Note that the first 3 decimals are identical.

The spelling of 216120679 in words is "two hundred sixteen million, one hundred twenty thousand, six hundred seventy-nine".