660228307 has 2 divisors, whose sum is σ = 660228308. Its totient is φ = 660228306.

The previous prime is 660228301. The next prime is 660228313. The reversal of 660228307 is 703822066.

660228307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (660228301) and next prime (660228313).

It is a cyclic number.

It is not a de Polignac number, because 660228307 - 2³ = 660228299 is a prime.

It is not a weakly prime, because it can be changed into another prime (660228301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330114153 + 330114154.

It is an arithmetic number, because the mean of its divisors is an integer number (330114154).

Almost surely, 2^660228307 is an apocalyptic number.

660228307 is a deficient number, since it is larger than the sum of its proper divisors (1).

660228307 is an equidigital number, since it uses as much as digits as its factorization.

660228307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 660228307 is about 25694.9081920913. The cubic root of 660228307 is about 870.7591502162.

The spelling of 660228307 in words is "six hundred sixty million, two hundred twenty-eight thousand, three hundred seven".