660222113 has 16 divisors (see below), whose sum is σ = 696854016. Its totient is φ = 624886080.

The previous prime is 660222109. The next prime is 660222119. The reversal of 660222113 is 311222066.

It is a cyclic number.

It is not a de Polignac number, because 660222113 - 2² = 660222109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (660222119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174995 + ... + 178727.

It is an arithmetic number, because the mean of its divisors is an integer number (43553376).

Almost surely, 2^660222113 is an apocalyptic number.

It is an amenable number.

660222113 is a deficient number, since it is larger than the sum of its proper divisors (36631903).

660222113 is a wasteful number, since it uses less digits than its factorization.

660222113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 660222113 is about 25694.7876620921. The cubic root of 660222113 is about 870.7564271687.

Adding to 660222113 its reverse (311222066), we get a palindrome (971444179).

The spelling of 660222113 in words is "six hundred sixty million, two hundred twenty-two thousand, one hundred thirteen".