668150812 has 48 divisors (see below), whose sum is σ = 1402132480. Its totient is φ = 272548800.

The previous prime is 668150783. The next prime is 668150839. The reversal of 668150812 is 218051866.

668150812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46639 + ... + 59257.

Almost surely, 2^668150812 is an apocalyptic number.

668150812 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668150812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701066240).

668150812 is an abundant number, since it is smaller than the sum of its proper divisors (733981668).

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

668150812 is a wasteful number, since it uses less digits than its factorization.

668150812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12722 (or 12720 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 668150812 is about 25848.6133477214. The cubic root of 668150812 is about 874.2282444592.

The spelling of 668150812 in words is "six hundred sixty-eight million, one hundred fifty thousand, eight hundred twelve".