216068667 has 16 divisors (see below), whose sum is σ = 298659840. Its totient is φ = 138801600.

The previous prime is 216068653. The next prime is 216068683. The reversal of 216068667 is 766860612.

It is a happy number.

It is not a de Polignac number, because 216068667 - 2⁶ = 216068603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216063667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17367 + ... + 27087.

It is an arithmetic number, because the mean of its divisors is an integer number (18666240).

Almost surely, 2^216068667 is an apocalyptic number.

216068667 is a deficient number, since it is larger than the sum of its proper divisors (82591173).

216068667 is a wasteful number, since it uses less digits than its factorization.

216068667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9994.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 216068667 is about 14699.2743698456. The cubic root of 216068667 is about 600.0635738193.

The spelling of 216068667 in words is "two hundred sixteen million, sixty-eight thousand, six hundred sixty-seven".