216100007 has 4 divisors (see below), whose sum is σ = 216897696. Its totient is φ = 215302320.

The previous prime is 216099953. The next prime is 216100037. The reversal of 216100007 is 700001612.

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 216100007 - 2²² = 211905703 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 (216100037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398438 + ... + 398979.

It is an arithmetic number, because the mean of its divisors is an integer number (54224424).

Almost surely, 2^216100007 is an apocalyptic number.

216100007 is a deficient number, since it is larger than the sum of its proper divisors (797689).

216100007 is an equidigital number, since it uses as much as digits as its factorization.

216100007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797688.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 216100007 is about 14700.3403702091. The cubic root of 216100007 is about 600.0925847868.

Adding to 216100007 its reverse (700001612), we get a palindrome (916101619).

The spelling of 216100007 in words is "two hundred sixteen million, one hundred thousand, seven".