660338275 has 6 divisors (see below), whose sum is σ = 818819492. Its totient is φ = 528270600.

The previous prime is 660338243. The next prime is 660338279. The reversal of 660338275 is 572833066.

It is not a de Polignac number, because 660338275 - 2⁵ = 660338243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660338279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13206741 + ... + 13206790.

Almost surely, 2^660338275 is an apocalyptic number.

660338275 is a deficient number, since it is larger than the sum of its proper divisors (158481217).

660338275 is a wasteful number, since it uses less digits than its factorization.

660338275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26413541 (or 26413536 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 660338275 is about 25697.0479822099. The cubic root of 660338275 is about 870.8074922444.

The spelling of 660338275 in words is "six hundred sixty million, three hundred thirty-eight thousand, two hundred seventy-five".