660116211 has 8 divisors (see below), whose sum is σ = 880452240. Its totient is φ = 439928832.

The previous prime is 660116173. The next prime is 660116213. The reversal of 660116211 is 112611066.

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

It is not a de Polignac number, because 660116211 - 2⁶ = 660116147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660116213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26350 + ... + 44883.

It is an arithmetic number, because the mean of its divisors is an integer number (110056530).

Almost surely, 2^660116211 is an apocalyptic number.

660116211 is a deficient number, since it is larger than the sum of its proper divisors (220336029).

660116211 is a wasteful number, since it uses less digits than its factorization.

660116211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74325.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 660116211 is about 25692.7268112982. The cubic root of 660116211 is about 870.7098671923.

Adding to 660116211 its reverse (112611066), we get a palindrome (772727277).

The spelling of 660116211 in words is "six hundred sixty million, one hundred sixteen thousand, two hundred eleven".