216071907 has 8 divisors (see below), whose sum is σ = 288237840. Its totient is φ = 143976960.

The previous prime is 216071893. The next prime is 216071909. The reversal of 216071907 is 709170612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216071907 - 2⁸ = 216071651 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (216071909) 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 in 7 ways as a sum of consecutive naturals, for example, 10182 + ... + 23147.

It is an arithmetic number, because the mean of its divisors is an integer number (36029730).

Almost surely, 2^216071907 is an apocalyptic number.

216071907 is a deficient number, since it is larger than the sum of its proper divisors (72165933).

216071907 is a wasteful number, since it uses less digits than its factorization.

216071907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35493.

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 216071907 is about 14699.3845789543. The cubic root of 216071907 is about 600.0665731686.

The spelling of 216071907 in words is "two hundred sixteen million, seventy-one thousand, nine hundred seven".