660222231 has 8 divisors (see below), whose sum is σ = 880869360. Its totient is φ = 439861632.

The previous prime is 660222229. The next prime is 660222239. The reversal of 660222231 is 132222066.

660222231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 660222231 - 2¹ = 660222229 is a prime.

It is a super-2 number, since 2×660222231² = 871786788613234722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660222239) 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, 66196 + ... + 75513.

It is an arithmetic number, because the mean of its divisors is an integer number (110108670).

Almost surely, 2^660222231 is an apocalyptic number.

660222231 is a deficient number, since it is larger than the sum of its proper divisors (220647129).

660222231 is a wasteful number, since it uses less digits than its factorization.

660222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143265.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 660222231 is about 25694.7899582775. The cubic root of 660222231 is about 870.7564790448.

Adding to 660222231 its reverse (132222066), we get a palindrome (792444297).

The spelling of 660222231 in words is "six hundred sixty million, two hundred twenty-two thousand, two hundred thirty-one".