668311260 has 48 divisors (see below), whose sum is σ = 1872477600. Its totient is φ = 178101504.

The previous prime is 668311229. The next prime is 668311261. The reversal of 668311260 is 62113866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668311261) 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 15 ways as a sum of consecutive naturals, for example, 133686 + ... + 138594.

It is an arithmetic number, because the mean of its divisors is an integer number (39009950).

Almost surely, 2^668311260 is an apocalyptic number.

668311260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

668311260 is an abundant number, since it is smaller than the sum of its proper divisors (1204166340).

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

668311260 is a wasteful number, since it uses less digits than its factorization.

668311260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7190 (or 7188 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 668311260 is about 25851.7167708452. The cubic root of 668311260 is about 874.2982171582.

The spelling of 668311260 in words is "six hundred sixty-eight million, three hundred eleven thousand, two hundred sixty".