660968286 has 16 divisors (see below), whose sum is σ = 1442112768. Its totient is φ = 200293400.

The previous prime is 660968281. The next prime is 660968299. The reversal of 660968286 is 682869066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660968281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5007270 + ... + 5007401.

It is an arithmetic number, because the mean of its divisors is an integer number (90132048).

Almost surely, 2^660968286 is an apocalyptic number.

660968286 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

660968286 is an abundant number, since it is smaller than the sum of its proper divisors (781144482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660968286 is a wasteful number, since it uses less digits than its factorization.

660968286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10014687.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 660968286 is about 25709.3034911489. The cubic root of 660968286 is about 871.0843422258.

The spelling of 660968286 in words is "six hundred sixty million, nine hundred sixty-eight thousand, two hundred eighty-six".