216707 has 4 divisors (see below), whose sum is σ = 220440. Its totient is φ = 212976.

The previous prime is 216703. The next prime is 216719. The reversal of 216707 is 707612.

It is a happy number.

216707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 216707 - 2² = 216703 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 216707.

It is not an unprimeable number, because it can be changed into a prime (216703) 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, 1778 + ... + 1895.

It is an arithmetic number, because the mean of its divisors is an integer number (55110).

2²¹⁶⁷⁰⁷ is an apocalyptic number.

216707 is a deficient number, since it is larger than the sum of its proper divisors (3733).

216707 is an equidigital number, since it uses as much as digits as its factorization.

216707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 216707 is about 465.5179910594. The cubic root of 216707 is about 60.0653916692.

The spelling of 216707 in words is "two hundred sixteen thousand, seven hundred seven".