660228304 has 10 divisors (see below), whose sum is σ = 1279192370. Its totient is φ = 330114144.

The previous prime is 660228301. The next prime is 660228307. The reversal of 660228304 is 403822066.

It is an interprime number because it is at equal distance from previous prime (660228301) and next prime (660228307).

It can be written as a sum of positive squares in only one way, i.e., 616032400 + 44195904 = 24820^2 + 6648^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660228301) 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 as a sum of consecutive naturals, namely, 20632119 + ... + 20632150.

It is an arithmetic number, because the mean of its divisors is an integer number (127919237).

Almost surely, 2^660228304 is an apocalyptic number.

It is an amenable number.

660228304 is a deficient number, since it is larger than the sum of its proper divisors (618964066).

660228304 is a wasteful number, since it uses less digits than its factorization.

660228304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41264277 (or 41264271 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 660228304 is about 25694.9081337140. The cubic root of 660228304 is about 870.7591488973.

The spelling of 660228304 in words is "six hundred sixty million, two hundred twenty-eight thousand, three hundred four".